Hi ^^^ - I'm going to try and reply to the above the best I can. Note, this is coming from me, in my own experience... and not necessarily the experience of everyone at PFS or the installers for that matter. -Danny...

I don't have experience with CQ, but I have friends that have compared it to Ceramic Pro and the first thing they tell me is that CQ scratches much easier. The other thing to keep in mind is that these coatings work well over vinyl, but the formula designed for paint definitely bonds better to paint than it does to clear bra PPF. One big reason for this is because both Xpel Ultimate and SunTek Utra come with a coating from factory already. This makes it a little harder to have the ceramic coating stick to it. For this reason, we've been using the Ceramic Pro formula designed specifically for PPF and Vinyl and using the standard 9H for paint.

I won't advise you to remove the entire vinyl on the Spyder just to apply CP, because as you say, cost. It's just too much cost to redo it all.

I think you have two options... You could let the CQ run its course and then have the vinyl cleaned as much as possible before installing CP... or you could go ahead and have the CQ cleaned off as much as possible right now and then have CP applied. There is a risk that the CP will not stick and not last, but I think the risk of actual damage is very low, so I don't think you have much to lose. Plus, the cost would be less than having to redo the whole thing. The disclaimer is that there always the chance the whole finish over the vinyl could be ruined if something doesn't go right... which would put you back at square one where you would have to redo the whole thing. I think it's a low risk, but a risk nonetheless, so I must say "try it at your own risk." But I have a feeling that the CQ stuff can be stripped relatively easily. It's just that I feel more comfortable using cleaners, alcohol and such over paint than over vinyl.