Experience? Yes. Conclusions? No. Hard to make any conclusions because the Sonax leaves a water-beading shine. It ruins the slickness of the wheel surface and that's all I can say for sure.
In my opinion, you shouldn't have to use a wheel cleaner if you have an LSP. That's just wasting product in two different ways. Soap and water should be fine. If you have baked on dust, your LSP is more than likely not there anymore so you shouldn't have to worry about it.