Hi Tigerlily11
The DWP will always question if a couple both get PIP and one of them wants to claim Carers Allowance or the carer's element of UC - can they either really fulfil the carers bit, or do they really need the PIP? There are people who have lost their carer's allowance or the carer's element of UC because of it. There are couples who have been able to show that it's possible to have two people on PIP, with one doing some caring duties for their partner, which does not negate their own need for support.
I can't tell you what to do here - all I can advise you is that they will ask questions should your husband apply.
BIS
Nothing on this board constitutes legal advice - always consult a professional about specific problems 
