Done well they can be pretty good; this was a lot of me trying to play around with them - which lead to some dubious clues. But some of them (such as 19A and 25A) are actually good. The rest can be a bit ... uhhh
They're normally pretty rare in a proper cryptic; as they require the answer to be both a valid phrase and a valid cryptic instruction. Hope it was enjoyable; even if a little confusing