We have 4 channels designated for 2m since that's the most common radio, particularly in mobile rigs (2m), which is all most were getting when the club first got into ham radio. There currently isn't a designated Rising Sun 70cm frequency, and while there could easily be it wouldn't apply to likely 60% of our licensed operators here. not because of band privilege, but equipment.
And yes, you hit it the theme of the thread here is exploring just that- does 70cm propogate better in the mountains (and canyons) than 2m.. and my answer is I don't know, but I'm willing to try!
82 fj40, 99 uzj100, 06 gx470
97 DR650, 05 525EXC, 01 XT225, 89 TW200, 09 TTR125, 07 TTR90, 07 CRF50