@Folax The continuous hash rate display has already been suggested and I'll try to implement something like that, but now I'm working on time-based hopping which is more important. I'll try to add it, but don't expect it in the next version, 0.6.5.
Your questions:
1. Try something like -f5 (or lower), the higher the number after -f is the less aggressive poclbm is. Also keep in mind that the hash rate displayed is poclbm's own average which takes into account actual share submissions, so depending on your luck it may differ from what Phoenix would display.
2. No, not yet. You can try the same .jar if you want, the feedback could actually be useful since I don't have any Linux distro installed right now (this will change after I implement some of the more immediate requirements). Last time I tried poclbm wouldn't mine, but that was a very early version and may have been doing something else wrong, so early that it wasn't even CherryPicking yet. For all I know it may work, but I don't advertise this because it's not tested and I wouldn't want somebody paying for it and then seeing it doesn't work.

Thank you!