invisible scrollbar is not good for programmers

Hello,
I will say this with huge amount of respect for your dedication and creativity, however I have a huge problem with the "magic part" of Ayatana scrollbars (aka Cheshire cat scrollbar). I currently use Ubuntu with Gnome 2.32. I believe the same style is in Gnome 3.0.

Quote start:
https://launchpad.net/ayatana-scrollbar
Ayatana Scrollbars use an overlay to ensure that scrollbars take up no active screen real-estate. A thumb appears magically when the pointer is in proximity to the scrollbar, for easy desktop-style paging and dragging.
The Ayatana initiative, lead by Canonical, is about designing for a more focused desktop experience. We balance the idea of "focus on the core task" with the idea of "awareness of what's going on around you".
This work, to produce a set of overlay scrollbars, is designed to improve the users ability to focus on content and applications. We are minimising the screen space that is devoted to "chrome", structural features which are not specific to the content at hand. We are aiming to retain the semantic or symbolic value of scrollbars - telling the user where they are in a document, or signalling that there is additional content, while reducing the waste of space and distracting clutter that a traditional scrollbar entails.
Quote end

At the minimum, you should give users a choice. Guess what, I just found that Apple Lion OS does exactly that. It allows the user to select if they want “always visible” or “cheshire cat style” scrollbars.

It seems the Ayatana scrollbars are geared to gamers or tablets or iPhone on which no real computer work is done. By real I mean no programming work is done. I am not a game player, I am a programmer. There are three most common things I do on my computer. One is searching for files. Two is programming within some IDE. Three is trying to find the Ayatana scrollbars. In fact, I estimate I am looking for scrollbars about 200 times per day. Yes I can understand that real estate is limited on the screen and I did research on that. I measured several of my windows and found out that typical width of a window is 100mm, and the height is 100mm. The vertical scrollbar if it were always visible take 3mm width and 100mm height. Horizontal scrollbar would take 3mm width and 100mm length. So the two scrollbars have area (3*100 + 3*100) and the window area is (100*100) so the ratio is 600/10,000 = 6%. So by making the scrollbars unusable you saved 6%.

To put it differently, I have to hunt with my mouse over the edge of the window repeatedly until I can see the invisible scrollbar. To put it yet differently, it is very bad idea to try to save 6% and making the window unusable because I can't find the scrollbar.

Again I have great deal of respect for all the Gnome programmers, but please give user an option to see the scrollbar all the time if there is hidden text in the window and make the scrollbar highly visible by providing proper contrast. It should require very little code since persistently visible scrollbars are easier to design. I am so desperate that I am looking into installing xfce or KDE. Apple Lion does give users choice, see Apple osxdaily on the web 2011 August 3.

If I am missing something pls let me know.
Respectfully, Jim

Reference:
http://osxdaily.com/2011/08/03/show-scroll-bars-mac-os-x-lion/
http://www.linuxbsdos.com/2011/10/24/disable-guest-session-and-ayatana-scrollbar-in-ubuntu-11-10/