I tried it on my Lenovo ThinkPad T510. It seems to work, as expected. It picks up the Intel wired NIC, and ignores the unsupported Realtek wireless NIC (as expected). Sound works. USB works.
I was under the impression that ALL hard disk volumes would be unusable, but the FAT32 partition reads with no trouble. I didn't try writing to it, but I expect that it would work.
I also tried on my Lenovo ThinkPad L530 (with UEFI BIOS). It seems to work okay (with the same problems as seen with eCS 2.1), but there is no sound. The L530 requires the latest UniAud to produce any sounds at all (and it is not right). Earlier versions will not even load. The FAT32 drive works.
A brief test, on both machines, indicates that it should work. Unfortunately, there are not a lot of programs to test with.
It seems to be adequate to indicate whether eCS will run on a particular machine, although there are probably some situations where the demo won't run, while the real thing will probably work, with a bit of tweaking. The demo is certainly NOT going to encourage anybody to switch to eCS. The user will need more than that to even consider trying the demo, never mind pay to get the real thing.