You're welcome, and obviously these vehicle are quite rare on the road generally, never mind in the trade, so I suspect it's unlikely that anyone with direct experience of using them for hackney work will respond to your question.
And if you haven't used sliding doors (never mind the electric issue) maybe others on here have something to say in that regard. But, of course, they can be problematic. And when I see things like the whole car shake when a passenger closes a sliding door, or the driver has to get out to close it properly, that's what puts me off the thought of sliding doors, and one reason I've preferred to keep the saloon. (We're either/or here, but since it's purely optional we've got a surprisingly high proportion of bigger vehicles here in St Andrews. I'm guessing maybe a third or more of the fleet have more than four seats. But, of course, not all of them have sliding doors.)
Thinking about it earlier on, and in fact I think the chap with the Alhambra here does mainly airport stuff with his brother (or actually has another job), so to that degree maybe some occasional rank work is tolerable.
But I remember first time I saw the Alhambra on the ranks, and realising it had electric sliding doors, and thinking 'OMG, that's not going to work'. But whether I was overreacting I'm not sure, but I wouldn't take the chance, personally