I was surprised when I first saw pic's of the Micro & Vltor on the same Ultimak rail.
We have two offset Vltors in the house . They really are thin enough to work with a Micro on an Ultimak and are quite popular in the US for that application. ( ETA: It's possible that the Vltor intrudes a little into the bottom of the Aimpoint FOV , but I would need to mount & dismount one (Again) to confirm or deny . )
Ours usually live on AR middie Carbines mounted on the side of DD Omega rails. Seem to work well with a VFG in that location as well.