Thanks very much for checking up Bob! I did reach out to them and a handful of other vendors though I never heard back from Last Descents.
We were trying to package two big trips - one river, one mountain - and were having trouble squeezing them into the timeframe. We haven't ruled the region out by any means but we're not trying to see what Canada/Greenland/Iceland area would offer.
Thanks again for your help. We've each only planned very little out of the country and so are sort of figuring out everything as we go!