I've debated attempting Dvorak several times now, and Colemak looks interesting as well, but there is one particular hang up that I still can't decide if I should lose it or not and how that would affect picking up a different layout.  Basically, my left hand is just about always shifted left a key so that my left pinky is basically my dedicated accelerator finger (Esc (Vim-user's Caps Lock remap), Shift, Ctrl, sometimes Tab, Win, Alt) and is generally hovering above the Shift key.  I realize this is weird/uncommon, but I think that I have a perfectly good reason for this odd placement, partly because I seem to use the accelerators so often in a day and this keeps pinky stretches down a great deal...

I'm looking for suggestions?  Is it worth it to try learning Colemak even with my weird "touch typing limp"?  Should I really force myself the agony of rehoming my hands when typing?

I'm almost curious to see what an optimized layout for this odd positioning might look like... (ie, maybe try moving one of the columns of punctuation into that middle column opened up between the hands?)

I guess part of the problem for me is that I am having such a hard time making the leap from the theoretical benefits of a new keyboard layout to justifying the practical costs of relearning (partly because I never felt like learning things "correctly" the first time around...).