With my 32s, about the only thing I really noticed after switching from the stock 4.636 gears to 4.90 gears is that I am able to stay in lockup more/longer on hills and such. I'm still acutely aware of when the converter unlocks and I turn the overdrive off accordingly, but even before I changed gears I wouldn't say I found myself having to run with the overdrive off more than on an as-needed basis. Climbing up a mountain or such is the only time I recall ever having to leave it off for an extended period.