Yes, you can switch back and forth.
9.3.0 is mostly an experiment. I'm trying to do lots of things with it and see what works well and what doesn't. As I get feedback (feel free to post), I'll use that to expand the default internal whitelist.
In 9.3.1 I would like to allow this kind of configuration with about:config settings to advanced users, but I haven't figured out how this will look yet.
Glad to hear the Fx->10.4Fx transition was painless.
9.3.0 is mostly an experiment. I'm trying to do lots of things with it and see what works well and what doesn't. As I get feedback (feel free to post), I'll use that to expand the default internal whitelist.
In 9.3.1 I would like to allow this kind of configuration with about:config settings to advanced users, but I haven't figured out how this will look yet.
In theory, yes, but in practice this is much lower level than Greasemonkey. Greasemonkey can only intercept data after it has been integrated and processed by the browser into the DOM. Byblos actually inserts a translation layer on top of the network stack and changes the HTML *as it comes* over the wire. Read the docs on it, I think you'll find it more powerful.
Glad to hear the Fx->10.4Fx transition was painless.