SS MTB?
My fleet back in 2006: 2006 Karate Monkey, 2001 Instigator (my 1st SS MTB), 1988 Ventoux
The Monkey on Monarch Crest trail in 2007...dinglespeed at the time.
My 2010 GF Rig at same sign a few yrs later
Warrantied 2011 Rig (I broke 2010 after 6 months) at 13,215' w/Pettingel Peak in background w/PBR Me! rolling by on his El Mariachi SS.
2009 Monkey - my winter-conditions MTB
My 2012 Kona Honzo posing @ 13,215'
Halfway down a 4,000' descent, which was preceded by a 4,000' ascent.....lots of walking that day.
DH SS? Why not!
Lots of folks ride SS MTB around here, Rocky Mts., which does mean some hike-a-biking, but that's a part of MTBing.
That SOMA looks to be a good deal for a starter MTB....go for it!