I reckon it's a good idea mate, experimenting with different styles, especially if you're also using new techniques too. I'd say fish them out of the scraps section - people tend not to look in there, and the Haurbus one especially doesn't belong in there. Uploading even quick sketches shows that you're still managing to squish some art time in amongst your busy schedule.

Both of these Jolan ones are good, for different reasons. As a non-artist, I like how you left the guiding sketch lines in this one, especially around the teeth and muzzle, so its a bit like we're watching you on livestream and the internet has died. The way you've got the rusted blood colour diffusing into the rest of the fur is particularly effective in this one.