I spent 6 weeks going up and back in the spring/summer of 1996 in my old TC. I took the Cassiar Highway through BC. That year there were a lot of late spring rains so it was harder than hell to find a hiking trail that wasn't too muddy or soggy. The mosquitoes were hell also, and I found myself wondering the same thing the OP asked.
However, I think it's well worth it just to scratch that itch. Saw a lot of beautiful country and magnificent wildlife. I especially enjoyed the area around Seward, Alaska. Better hikes and less mosquitoes.
I probably would not do it again though.