other than me using 'ce' instead of 'cw', it isn't any different. this stuff is very muscle memory-ish. the location of the keys is not really a factor except for finger collisions such as 'cw'... which is the only such collision i remember noticing

hjkl is kind of a red herring in this case. those keys happen to be bunched together in qwerty, but that's an irrelevant accident of history, and those keys are not used very commonly to begin with. at least, they shouldn't be used very commonly. much better and faster keys are: 'w', 'b', 'I', 'A', '{', '}', 't', '/' etc.