I use 123 1234.
Learn it in every key with that fingering. That gets interesting.
I find experimenting with scales fun.
I wouldn't find 1234512345 fast for that scale....but this is the fastest fingering for chromatic scales when you can get away with breaking the legato. For example Wilde Jagd 2nd page scales, 54321 54321 and 12345 12345 in LH makes it possible to play in time.
My old teacher told me to use 1234512345 in the fast chromatic scale in Beethoven 4th concerto, but I dont like that. Best fingering for chromatic scales in my opinion is the one where you start put the thumb on everyother white note.
What about the evil scale in Prokofiev 7th sonata 1st mvt? Me and my teacher came up with some strange fingerings for that in my lesson today. There are loads of different fingerings for that.
What about 4th Scherzo scale? I think that is just the nicest thing to play. I find E major the easiest scale to play at extreme speeds.