Yes, I did as soon as I heard they were offering a Linux version. Doesn't look half bad, but I couldn't find the functions I need.
I know it has rectangular or "block" selection, but it's not conveniently available as a modifier key (hold down control while selecting, for example).
The text editor functions I need/want:
Rectangular/column/block edit mode
Bookmark lines with regex search
Perform actions on bookmarked lines (copy, delete, move, etc)
Automatic incremental block fill (most can do multi-line text entry; not the same)
Then again, this isn't my thread, and it hasn't been that much of a bother to post about otherwise. Notepad++ and Textpad 5 did all of these quite handily. Geany and/or SciTe do most of what I need in Linux, but still...