uni mould system.../ mould release compatibility

Like you imagine, I need help about a few questions, I ll try to be short:

1) My first question is about the uni mould making system:

I saw it's cheaper than epoxy mould systems, with high compatibility with epoxy and polyester (perfect for sticky spray).
So that is for the pros but does it exist cons?

Because if not, I will make each mould (big or not) with that system instead of epoxy. BigGrin

2) I would like to know if it exist compatibility problems between the differents release systems (PVA, chemical or wax)?

For exemple, can I use the chemical release agent on a mould witch was waxed several times before?

Does the mould cleaner destroy the pva, was or chemical release barieer?

3) I discovered your sticky spray on your tutorial witch looked awesome to keep layers in place before the infusion (a real problem for me) but actually, all my moulds was made with epoxy gel coat (I saw it cannot be used with)... Ermm

HAve you a solution for me? And when will it be available on you shop Wink

thank you by advance for your answers BigGrin

cheers