Replying to 50-50 variations..are so hot right now?

So lately i've been seeing a lot of different variations of grinds, for example in like every episode of the line traveling circus, there are also some in a bunch of other vids in the top rated.

what are your feelings on it?

personally i think some of them look pretty sick, especially when someone uses the ski to hit the side of the rail and start a switch up or something. i feel like it adds a level of tech on rails that skiing has been missing vs. say snowboarding.

however....is it moving towards inline skating??