re: it really doesn't matter?
Well, within reason of course.
If the problem is, 'My bike runs 'fer crap when it's cold. It 4-strokes and doesn't have any power until I wring it out for ten minutes or so and get it good and hot. Then it runs great for the rest of the day!'
Well.....you don't have much of a problem. A properly tuned bike isn't going to have much if any 4-stroking even on a choke cold start! You're more likely to have a lean bog problem when it's cold...but that only lasts for a couple of minutes, until you reach operating temp.
Strictly speaking I wouldn't say, 'It doesn't matter.' Responses from a cold-choke start give you a clue as to what needs to be done tune-wise.