I don't think that the conversion side of the Valid slides is a technical decision; it is a business decision. Prevost has a ton of non-slide coaches in inventory and, being a buyer's market, $$$ are lower to buy a non-slide XLII and put an aftermarket slide in it.

There are two cases where Prevost took a coach back into the factory and installed a slide and they said they would never do it again.

So, you go to the next best option.

Have a nifty looking aftermarket slide for shorter money.

As to the Prevost pinless slides, haven't seen them in person. I like the first version: When the pins went in, even those of us who are deaf as a post could hear them go in.

Good stuff.