I thought about putting it in there, it certainly would keep the crud away, but decided to put it under the bonnet in the end.
I thought about modifying the wiring, so that the compressor could be turned off but you could still use the remaining charge if needed, I seem to get about four engagements/disengagements before the compressor cuts in again. The thinking was the last thing you want is the compressor coming on when going through deep water and sucking it in, but you'd still be able to use the lockers... But then I realised without a snorkel I'm probably not going to be going through water deep enough for that to be a problem!