Hi,
I gave it a quick shot, it has promise, I had the following immediate feedback:
1. HxD is quicker to scroll through the data; any way to speed that up would be appreciated
2. An option to change the font color would be appreciated; the blue on faint blue isn't ideal for all. I could find the option to change the font, but not the color.
3. There doesn't seem to be a Find option (or at least, I couldn't find it; maybe I missed it) to search for text or a hex sequence. I also tried Ctrl-F but that didn't do anything either.
4. Some of the menu options are in unintuitive places. For instance, the font changing menu ought to be under "Settings" or similar, but instead it is at View->Font.
5. The 20kbyte file size limit feels very restrictive to properly trial it. Maybe it would be better to have (say) a minute-long nag screen instead.