Does the SVA examiner give a monkeys if you use one or t'other?

No, as long as the eyes you use are up to the job.

The bolt in would be easier to cover with a nut cover.

They also measure the height above the seat.

Snap-ins are easier for people to nick... But makes no difference to Mr SVA.

Cheeeers peeps!

Only problem is that most snap belts have rotary buckle releases......something that lots of SVA inspectors fail

Ah... too late - order made!