I've never seen a romswitcher for the A1200 in the flesh. Almost all romswitchers support OCS/ECS machines only because they plug into or piggyback the one Kickstart rom slot that these machines have (and some have a clip that attaches to the Gary chip also). The A1200/3000/4000 all have 2 slots for Kickstart roms, so making romswitchers specifically for them was seemingly a harder proposition. Looking at the BBOAH it would seem that few were ever made for the A1200. This is the only one I found for the A1200:
In my experience using real Kickstart roms is always better than softkicking, but you may not have much of a choice with your A1200.