Well if you have many gpuminers in the rig it will work slow if installed on usb flash as dag loading takes a lot of time (about a hour for 6 gpu) . Clymore miner doesn't have this problem but works slow on linux, tried yesterday on my custom peppermintethos usb flash version. This genethos is nice but WebUI is horrible and too complicated.
Talking about DAGs, you can copy and run any miner from tmpfs in RAM, and in that case it will be faster than using HDD. Talking about Claymore's miner, I think we should find out why it works a bit slower, and fix it instead of dropping the Linux version.
WebUI is horrible, but actually it is Webmin with few custom commands added, and a set of scripts. You may use UI to edit them or may edit the same files with ssh and vi, then just run and forget. I see nothing that requres that UI to be used all the time. You may use ADL monitor, but again, having an application for Claymore's miner (say, written in nodejs), there is no need in that either.
In short, it needs some polish, but can be used as is and is very stable and (almost) ready to use with this miner (and ready to use with few others). I may expect that commercially sold alternative (
https://forum.ethereum.org/discussion/4298/ethos-linux-ethereum-mining-platform) might be better in that respect. But anyway, for me it is a "run and forget" system, we only should fix the miner to have the same performance on both platforms.
