My advice play them both then decide... Sam is my main currently, both are viable in group content, both have pros and cons but outside of savage content everything is viable really. If you intend on doing that content, yes there will be a meta, yes there will be proffered jobs but it will boil down to you and your ability more than anything, try them both, if your an awesome Sam/smn you won't suddenly become terrible when gaining your end game abilities and visa versa, if you don't get on well with one of them, hitting 70 isn't going to suddenly fix that, play what you enjoy and what you're good at, it's as simple as that, if you are looking at endgame savage content you'll get a spot in most statics based on your ability not your chosen role, the only reasons you wouldn't are they already have melee filled and you're a melee or you aren't "good" enough for what they want. Fyi my static is taking both Smn and Sam for omega.