I'd really like to try some of these loops that Norona and others do, they make Seymour sound a lot more interesting than driving up and riding down.
I find it more interesting. Pretty much the only way up Seymour other than the paved highway is Old Buck. I have gone up the power line from the West side, but there's a wack of hiking involved. Old Buck to Baden Powell accesses a lot. Going past BP to the powerline gets a bit more but I don't know of other climbing routes off the powerline until you get to the Cabin Trail that will get you to Dale's, Ned's, TNT, DD, Lumpy Gravy.
I climbed Fromme via Demprey Braemar across BP to eventually Peugeot and some new climbing stuff up there. Took almost exactly an hour to get to the Mountain Highway just below St Georges. Still need to explore for other routes.
Debate? Bikes are made for riding not pushing.