So all spells, in D&D terms, have material and vocal compoents, but none have a somantic one (or, more precisely, spellcasters can wear whatever armor they want)?
In D&D terms all spells have a V component. That was true for the vast majority of them as described in the SRD. The ones that didn't appeared to be either somewhat randomly chosen or in a few instances well chosen to go along with spells of obviously covert nature. Offsetting this is the Spycraft version of Silence Spell metamagic is a lot more effective allowing you to build a truely covert caster if that's your intent.
In D&D term all spell do not have an S component. This goes with armor being more universally available to characters in Spycraft as wearing armor has an inherent set of tradeoffs rather than almost always being a good call as it is in D&D. Plus Spellbound features a number of much more martial spellflinging archetypes. Part of this arises from ACP using a simpler definition in Mastercraft - it affects all skill checks based on physical attributes (Strength, Dexterity, Constitution) and leaves the mental ones alone.
In D&D terms there is no direct equivalent to the Gear tag. The closest approach would be to say spells do not have material components at all, but there are optional material components that make them easier to cast. Eberon introduced some of those and they were actually pretty clever.
This spell doesn't require it, but there are spells with Preparation costs. That's a seperate line that appears when needed instead of being described as a check tag. I'm fairly certain we dumped all the XP costs as a mechanic that was unhelpful at the table.