I guess it would depend on what you had inside the cupboard, but you wouldn't want something pushing a hinged door open "underway."
The Velcro™ types I've used that would hold a hinged door that strongly would not be all that fun to use on a regular basis, in my opinion (the double hook type). They are a lot more of a pain to open and close then a latch handle.
It would be different on a sliding door, because the force of objects against the doors would be outward, and there is a track to hold them in place. So the latch/velcro/whatever is only holding the door from sliding sideways, not holding the contents in. There's more force of contents on a hinged door trying to open it.
Now maybe I'm being too cautious because of my background on sailboats. There, you want to know you could turn the boat upside down and shake it and have everything stay in place. I know it's not that severe in an egg though.
I agree that the original latches on the Bolers/Trilliums are not all that satisfying, architecturally
There are some nice latches and catches in boating catalogs, although they are more expensive and heavier, as a rule. But you might get some ideas from something like www.westmarine.com