One thing, do not apply it to the bead contact area. POR-15 is slick enough the tire will lose it's grip on the rim. Drove my tire guy nuts until we figured out why my tires kept losing balance.
That slipping issue can be related to the safety bead or lack of it when tubeless tires are mounted on tube rims. The rim Bead area is different and the tire beads are not the same. Yes.......in know many have done the switch with no problems.