Yes, I have used this on my own bartop and I'm pretty happy with the results.
I'm not familiar with the Helmsman so I cannot make any comparisons to it. But by the way you describe it, it sounds as thick as standard polyurethane.
The Envirotex has the consistency of honey. So it pours on thick in my opinion, self levels and cures. Its a 2 part epoxy, so it must be used right away after its mixed. The only flaws in my application seem to be some dust that was in the air.
Heres a couple pictures of it on my bartop. Its difficult to get good pictures showing it, but in person it has a ton of gloss and the depth of perhaps a thin sheet of glass. I could have poured more, but I'm happy with the recommended application. It did a nice job of filling in a crack where two wood boards decided to come apart. I put some tape on the bottom side just in case it ran, but it didn't. It cures pretty fast, so I attribute that to the gap sealing abilities.
Please excuse the rest of my mess in the photos, its a work in progress! The bar sits behind my sofa and doubles as the second row of seating, which works out GREAT. Most people wanna sit at the bar instead of on the sofa where the audio/video is optimized!