I don't clip.
I've never lost a swarm (yet) but if I do lose the odd one, then good luck to them and I don't think it's bad for the gene pool.
I catch plenty of swarms every year anyway, so it more than evens out for me.
But then my views are different to most beeks.
I see myself as privileged as being able to look after the bees and in no way see them as my property. The honey is there by the bees own good grace and who am I to mutilate a creature in my custody.
I think most beeks who do clip do so because essentially £ is on their mind.
If you're a good beekeeper, then you should only lose a minimal amount of swarms anyway, depending upon how many colonies you have. And as I say, I have trouble keeping my numbers
down!
And if she's a swarmy type....then good riddance anyway!!