RAM HD Tradesman (ST, SXT in Canada) comfy enough?

Thanks for all the comments so far.

The lack of lumbar adjust may be be an issue to me 'cause of the bad back (herniated disk). But I guess I'll just have to find one and sit in it for a while to find out for sure.

Other than that, it looks like the ST/Tradesman has all the options we want. Would hate to spend the several extra thousands for an SLT just to have a more comfortable seat, but for long range driving, it's essential.