I'm probably going to take the MSF course this spring / summer. They have several classes a week around here from the very large motorcycle population.
However...I don't think I'll go straight into ownership. I can't imagine still learning and trying to not get hit by all the crazies out here. I'd guess that 1/4-1/3 of the population is born with a cell phone attached to their heads.
As to the bikes, I had been considering the enduro and supermoto's, but those might be a little bit of a stretch for those with shorter inseam lengths. Can't hurt to sit on one, see how much the suspension compresses (you can often adjust it too, or modify the linkages so it will sit lower). I took quite a liking to the DRZ-400S / 400SM (slightly biased to the SM).