At the base of the argument is how you ride. LDComfort is a better material than others and has properties other materials lack. Motoskivvies claim to fame is the pad like bicycle shorts. (I used to do century rides on bicycles too, so am quite familiar with padded shorts)
It's important to note that with Motoskivvies you have to select which style matches your riding position. No such thing with LDComfort products. No pads, so no worry about seams in the wrong place and the same design works for any riding position.
If you're not riding long days, most anything synthetic or wool will work fine. Avoid cotton as it holds moisture and keeps it next to your skin which will promote development of rash, etc. Seams can be an issue for any product not designed for riding, so be aware of that when you purchase. How it's cut, where seams are relative to your riding position, etc.
Worth noting is that Motoskivvies has a basic flaw in the concept. In bicycling, you are wearing padded shorts with lycra/spandex and nothing else over it. Plenty of air flow except where the pad is. In motorcycling you are covering up the Motoskivvies with riding pants or jeans and that's the worst possible thing you can do. Now you're really not getting any air flow and those materials are not designed to keep moisture off your skin. This leads to the use of powders and other products and you don't need any of that with a product that keeps moisture off your skin.
If you don't ride in hot weather much, the Motoskivvies might be great. LDComfort is designed for hot and cold temps and works extremely well in hot weather. Especially in lower humidity conditions where you can wet it down and use it for evaporative cooling too, but that's a secondary benefit.
I'm a LDComfort fan. Bonus, you can wear them around the hotel lobby w/o looking like you have a diaper on.