That's an interesting use-case, though I wouldn't be surprised if some impls really wouldn't like LMUL dynamically switching at runtime a lot (i.e. something li

That's an interesting use-case, though I wouldn't be surprised if some impls really wouldn't like LMUL dynamically switching at runtime a lot (i.e. something like LMUL being forwarded at decode-time, so it couldn't decode after an unknown-LMUL vsetvl, ruining perf)