Anyone purchased one? Fo? Hell no?

It's the cheapest one they offer, I'd pass unless you're curious or have a specific use.

i bought one, $99 free shipping.  just for the hell of it.  VERY basic.  no motion-activated.  I think for a basic, no-frills red-dot, it serves its' purpose.  At $99, it's pretty low-risk.  I put a MI QD base ($80) on it, just because I'm particular, even though it comes with a decent QD base.  MI QD base cost almost as much as the red dot itself.  Seems pretty decent, although time will tell.

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2/17/20 ETA: Sig Romeo MSR does not come with QD base.  my faulty memory.

All the models I've seen come with a standard "permanent" picatinny attachment using a Torx bolt.

damn!  yeah, you're right. got mount memory mixed up with the Sig Romeo7 I ordered at the same time.  I guess that's why I ordered the MI QD base.  sorry my bad, brain cell damage, bad memory.  Anyways, pic of the Sig Romeo MSR with MI QD mount.