The Omniframe has hands, and will hold its weapons. Things being contemplated but not decided:
1) How many weapons can you switch between (yes, pocket dimension hand-wave. yes, at least two weapons)
2) Will there be melee weapons?
3) Will the two shoulder mount canisters be weapon hardpoints on the frame for frame specific alt-fire or even abilities?
So, all I know for sure is that the Omniframe acts like a battleframe, in that it holds its weapons. Omniframe also has a clear shoulder mount system in the concept that we may or may not use for permanent shoulder mount accessories (could be weapons, could be abilities, etc.) Controls and the rest will be figured out later.