Shouldn't affect the RW assets but because the AT asset will now be blocking the active runway, the airfield will be black to FW assets.
However, as has been alluded to above, using the deployed airfield isn't the major issue. It is the lack of assets generally; AHE, airframes, crews. Also as has been stated above, most crews would rather go to 'home base' to pick or drop off personnel/equipment as most of them have been pax themselves, but we now longer have the assets to pre-position an aircraft the day before and load it there. Most aircraft come back from a route, get unloaded, prepped and then reloaded overnight for the following days trip. To preposition means losing a days flying which we can't afford at the moment.
Another point which has sort of been touched on is that the costs for deployment from a home base lie with the user unit/HQ. If they have have to up the crash cat, bring in extra staff, pay for HOTAC for the crew and movers/engineers/support personnel, those costs lie with deploying unit/HQ. Most of the time they would rather pay c*ck all and ship people by bus to the airheads. Sorry but that is the way the bean counters work as they have no concept of the morale!