I know this is a thread about wide angles... and single lens use, but I have to speak up here.
I hate to speak ill of the dead, but I'm sorry to hear you've hitched your star to GW's wagon. Regardless of his legions of devout followers, his work is, to me, haphazard at best and at worst, random and without discipline or meaning. I don't even see it as reportage. I've not yet seen any of his work that I've given a second look to, although I keep looking from time to time. He was prolific, I'll give him that... but being prolific in and of itself is not synonymous with "great." Perhaps it's partly his reliance on the 28mm for everything that I find objectionable and that make his images unremarkable.
There's an old adage that says you can either have twenty years' experience or one year of experience twenty times. I've not been able to find any growth in GW's work over his career.
On the other hand, he became famous and I am not... so there you go.
I realize I may be treading this path alone and that my comments may spark the ire of those committed to the "school of GW;" but to each, I suppose, his own.