Does anyone have one of these?

Presently, I have the standard BA Amex Premium Plus, which I use for quite a lot of business expenses, but this unfortunately creates the accounting burden of someone having to go through my statements, differentiate between personal / business spending, then submitting expense claims for the business stuff.

I'd not realised it was possible to get a corporate version of the card, and given I use it primarily for business expenses, it seems it would be a lot more logical to get one through my limited company. After a brief read of the requirements, it seems the mileage accumulation is the same, but I wanted to check the following things:

a) Presumably the mileage can be accumulated onto a standard personal Exec Club account? I don't have OnBusiness or anything like that.

b) Can you hold both the Corporate BA Card and the personal one? Or would I need to give up my personal one if I wanted one through my company?

c) Any other hidden nasties or stuff I should be aware of?

Thanks