You could field the Scorps as fighting stands, costing 20pts less than the recce model and just throw them out front as a screen...
If you want crunch for the GSR maybe cost & use as a command post, but allow it to move in the end phase and give the bonus to a commander in contact with it. Call it a command unit for being targeted, I think, so all it worries about is getting clipped by air & arty.
Mind, three hits and a six save means you really do have to worry about getting clipped