Con,
I think you need to read IO540's reply again.
I am sure it would take a lot to break the wings off a Cirrus, or a TB20 for that matter. Probably flying into a nasty CB at close to Vne. But once a wing breaks off, the thing is just going to plummet; around 10,000fpm (100kt vertical speed) according to some NTSB reports. No CB will suck a 1000kg+ lump upwards, IMHO. The chute should work.
There is little doubt that a CB could suck a fully intack aircraft upwards. But IO540 was saying that if the CB caused the wings to break off, then it's not going upwards.
Without a chute no CB is going to suck a 1000kg lump of metal without wings upwards. It's no longer designed to fly. With the chute deployed, perhaps in an extreme situation it might be possible, but I doubt it.
I think you are talking at cross purposes. You are talking about an aircraft with wings getting sucked up, and IO540 is talking about an aircraft with it's wings broken off.
dp