Okay, this thread got bigger than I expected. Nice. I practice modes the same way one would do a warming up before playing a game of football. Albeit a bit of a thorough warming up. I see it as maintenance practice. I hear a lot if this "yeah but you gotta play music man, you can't just run scales blabla". That's so true, but kinda obvious. My problem with it is that a lot of people who speak that way are often the same people that don't want to practice them at all. My teacher at the conservatory calls practicing scales/modes/voicings etc: "creating headroom". In my opinion you can't have enough headroom so I wouldn't really stop practicing them

and after all. What's 1 or 2 hours in a day? Not that much. In reply to some other questions I saw. I would say that you have to get all over the instrument: Practice lines/intervals/arpeggios/sequences/voicings/position playing etc etc. technique pretty much comes with the package if you are consistent.