I'd be skeptical of the effectiveness (and durability) of something like that, and it seems to have a pretty small load capacity. I don't think the fact that you can roll it around would be of much advantage in a skoolie.
It also appears to not be a real product yet, and for about the same price you can get an actual countertop dishwasher like this one: https://www.amazon.com/EdgeStar-DWP6...dp/B07BR2N76B/
which also requires no installation (although it does need a pressurized faucet).
Or for less - I got one similar to this for $75 off of craigslist and it works very well. I'm going to just have sufficient room (I hope) to mount it under my sink.