I'm not 100% sure, but if you look through Quality Assurance standards, you may be able to use "continuation of care from home to centre", ie, using cloth at home to the centre would form part of their QA standards. I haven't time now, but I'll have a look later and see what I can find.

I'm a FDC provider, and would happily use cloth. I don't see the difference with cloth or disposable. I put on gloves whichever "style" of nappy it is, the gloves are removed once the nappy has been dealt with (and I use both cloth and disposable). The change mat is disinfected after each use, so no chance of cross contaimination there.
I have also in the past when I've had a lot of children in disposables sent the dirty ones home at the end of the day, to me, a bag of dirty disposables poses more risk then a wet bag/bucket full of cloth nappies.

It will be interesting to see what is said from our scheme manager when she realises I have my baby in cloth nappies next year when I return to work.