Yep, you're absolutely right, Robin. Yours have the guide holes for a very good reason, to keep the straps on your shoulders.
....It would be rude not to use them!
I would only use these on the track no matter what seat I had, mainly for the reason on certain types of junction you have to lean forward to see. This would mean loosening the belts to enable you to move and if you were to be shunted, you wouldn't be safe.
....Very good point re some road junctions. When I recently drove the road-legal track GTI (pic in my sig) with full harness, I had two problems: 1) The sides of the Recaro Pole Positions blocking my view, and 2) Betty Swollox from the groin tightness. I still absolutely loved driving her on the road though!
I find that side>rear visibility with my Recaros is greatly improved in comparison with my stock GTI driving seat.
You MUST guide them through the headrest poles to ensure they don't/can't slip over the shoulders of the seat. Doing this makes them no different to the style of seat below, and to be fair the headrest should be raised for most people anyway to work properly.
....The headrest
SHOULD be raised as you say, but I wonder how many people's actually are?
If it all were to go wrong though, I think a bit of belt marking on the neck would pale into insignificance compared to everything else.
....
- Agreed!
^^^^ Now
THAT is a great fast road car seat!