Hi
Yes I have one of the original Delta ones I bought from USA (or Canada? so long ago now) after seeing Norm using one. I had it fitted to a Felder CF741 sliding table and used it to cut cheek cuts on 100's of tenons. Can't imagine why someone stated 4 hours to set up? certainly nowhere near that long.
You do have to remove the riving blade, but the purpose of this is to stop the outfeed of timber catching the back side of the sawblade and coming back to whack you in the face when RIPPING timber. How long are your tenons??? but the time the tenon clears the front of the blade it's barely reached where the riving knife would be, plus in any case it's unlikely to cause a problem. You DO HAVE to watch out for the cut piece being shunted backwards, so best to organise the order of cuts to minimise this and don't look directly behind the cut!!
I have one to sell if anyone interested, now I've retired
David