http://www.twitch.tv/viskiv/c/3861273The clip itself is certainly slower, because you can't skip the puzzles. On the way back, the thief girl will be stuck behind the closed doors.
There is something else that almost made this viable. If you use the east gate, and hold the statue in a certain position, you'll land on the B2 walls (you'll know you did when, after the clip, you start changing floors constantly). From there, you can get 1 room north as well. In there, you can hit the switch with a bomb or ice rod, and dash to the right room (you can land close to the eyegores room). But this is still about 5s slower than normal route.
So, currently, there are 2 ways to make it useful: find a way to go back with thief girl without solving the puzzles, or find a faster way to get over the walls on B2. It takes forever to setup on the right gate; southwest gate is very close to a wall, but doesn't seem possible to land on it.
Koizata, did you guys find about the over-B2-walls as well? If so, did you find a way to get to any other room besides those 2? The gap between that room with the switch and the northmost room seems so small, but I couldn't dash over it..
Also, mostly to be recorded, you aren't restricted by only 6 tiles to clip (2 for each gate); after raising the gates, you can pull the statue, and the one sliding over it will keep sliding in your direction. Once you stop, the statue will fall and clip you.
Another thing, if you pull then push, if you time it right, the sliding statue can change directions, and
clip the gate. Once again, useless, but interesting.
EDIT: about Weegeechan's post: I could see the merge icon in a few places, and do the glitch once (it seems it's very precise frame-wise). From what I could see, if you dash and is inside a certain rectangle, you can do the glitch along the edges of this rectangle:
West,
south,
north,
east 1,
east 2,
approximate rectangle.
I only checked ending the dash inside that rectangle. I'll mess with it a bit more.
Edit2:
http://i.imgur.com/O8Cytc7.pngYour 2nd image does show a differnt region than what I found, though. I wasn't able to get a merge icon there.
Edit3: nevermind, it seems you got a merge icon from the 2nd rectangle, and was stopped briefly on that wall, right? I got it once.
Something like this:
http://i.imgur.com/qRhNpFQ.pngEdit4: Sorry if this was already discovered, I didn't follow the merge glitch very much; but it seems the other merge glitches work the same way: stop the dash inside the rectangle, then move to one of its edges.
This is Lorule's Castle, for example.