Hi Gary,
As you've probably noticed by now, it really is a very personal decision. I hate having my head & ears clamped in a vise; even a padded vise. The 1st thing I tried was a little in-ear gaming headset you could buy for well under $20 at the time. Actually worked fairly well for me; others complained about low volume & tried all kinds of 'hacks' to make them usable. You've probably seen the thread(s) here and elsewhere on building your own, as well.
I finally broke down & bought a QT Halo, & offered to let my wife try it before I did. Never got it back, so had to buy another for myself. We both use the silicone inserts. I find them easier to get into my (small canal) ears than the foam, at the expense of slightly poorer noise reduction. (Still much better than my 1st gen and 2nd gen Lightspeeds.) Even the foam isn't that big a deal; just takes a minute or two extra to insert, and as I said, the noise reduction is better due to the conforming seal and damping of the foam.
Never seen or touched the one you linked. Unknown is how heavy and how irritating the little box behind one ear would be; again, personal tolerance would play a big factor. The earpieces look like they'd be difficult to insert and possibly not designed to seal up your ear canal, but no way to tell without actually trying them. They should offer multiple sizes/styles of 'plugs' for varied ear shapes/sizes. As others have said, it is *critical* to get a good seal in your ear canal for the noise reduction to work properly. (Same goes for 'vise style' headsets too; wearing glasses degrades the performance more than most people realize.)
To get a rough idea of your own tolerance, wear some foam earplugs for a couple of hours while doing yard work, etc. If ear plugs don't bother you, you'll probably tolerate the in-ear headsets also.
You could always 'get your feet wet' by trying an in-ear gaming headset with mic. Lots of them on the market now for <$50, but be sure they seal the ear canal. Many of the new ones appear to vent to the outside; great if you're sitting at your computer but defeats the purpose for a/c.
Charlie