IMHO...3M Show Car Wax (paste or liquid) is a Sealant
Will it work atop KSG? Probably.
Instead of doing that, though, I would:
-Put a layer of a pure carnuba-wax over the KSG. Or:
-Put on another layer of the same Sealant...KSG...
in order to ensure uniform coverage.
(Instead of a Sealant from a different manufacturer's product line-up)
Whether an LSP-product's stoddard and/or petroleum distillates are: "strong enough to remove the sealant"
(or other types of LSP's, I'll add)...
Is often an interesting, quite debatable topic...on many Detailing Forums.