As the old adage goes, "A chain is only as strong as its weakest link". This probably applies to computers as much if not more than anything. Flash RAM drives do work, they are used in high end applications like defense and satelite systems where speed, resistance to external environment and low power usage are critical and cost is not. But as you note, if your bus and controller can't match the performance of the drives, what's the point? The bottleneck just moves to a different place. For the money, it'd be a lot more effective to max out the RAM on the 8890 with two 1 GB sticks. In fact, you'd have enough left over to get a second maxed out 8890.
Frankly, there's a lot about the Lieberman products that is mostly "cool" factor, ala "Reality Shows" that are about as close to reality as Anime. Its like having a full race Ferrari that can do 230 mph, so what, there's really no place to drive it like that off the race course and most people shouldn't even think about driving a car that fast, they will be lucky if they just kill themselves. Or like having a 31 bedroom Hollywood mansion, do you really need to be able to sleep in a different bedroom every night of the month or is it just the fantasy of having a playmate in each one? In real reality, by the time you get to number three, the rest have taken off with a Brazilian race car driver in his jet powered RV.
The monitors are amazing but what's out there to look at in that format? Unless you like your movies really really "wide". As I noted elsewhere, the most interesting item they feature may be the cooling system. I don't know how much that differs from a standard Clevo 8890, but since I don't see any advertising about such in their literature, I have to assume this is a real worthwhile Lieberman upgrade it would be great for Clevo to incorporate.
Perhaps the best thing about "l" is just that they are there and pushing the market. It is a real company with real legs and its got plenty of resources so I don't expect them to vaporize. If they encourage Clevo to go for "it", all the better for us real people.