Yes.
I've used nearly all Optimum's line. They make great products.
OptiSeal is not to be confused with the new permanent OptiCoat.
OptiSeal was all the rage a couple years back, because it was one of the first easy to use, wipe on/walk away sealants. It has good slickness and faintly darkens the paint. It's very "wet" looking, without being plastic looking or sterile like some other sealants (zaino) can be.
Zaino does have a competitive product, ClearSeal (ZCS). ZCS is comparable in all ways, but looks a little better on lighter colors. It doesn't quite have the slickness of OS, but seemed to last just a touch longer. In reality, they're virtually identical to most people.
If you want to wash/clay/polish your truck once and then apply OS; you should get a solid 3-4 months out of it before it shows any signs of deterioration. Especially if you're willing to dry your truck while using Opt. Spray Wax, OptiClean, or Instant Detailer (pick any 1 of the 3, OptiClean is the most versatile).
If you're really serious, wash/clay/polish to absolute perfection, then apply the new OptiCoat. It's a bit of a daunting task for a large truck but well worth the effort. I did it when my truck was new and it's holding up super well (as it should). There's been a lot of development time and the product really isn't new, just newly released to the public. It works and isn't crazy hard to apply if you have patience. Mostly, it works as advertised. CQuartz has a comparable product that is supposed to be a little easier to apply, but I haven't used it. OC isn't "hard" to apply though.