Turns out MP.com isn't the best resource for getting info about Canadian climbing. I asked a similar question about Canmore logistics and got nothing.
Check out the Serl guide. It's got some good info. (Also, I think he posts semi-regularly on CC.com, which I bet would be a better resource with more Canadian members) Bivouac.com costs money, but is a decent option as well. Otherwise, consulting the CAJ and AAJ is going to be your best, albeit slightly more tedious bet.
the same thread I posted on CC yielded a response from mr serl himself! looking like we'll be getting dropped off at the plummer hut and unless by some incredible good luck the upper tiedemann isn't a total shitshow will be sticking to routes on the serras and claw, bummer. I don't know how I'll deal with it.