Yikes! Looks cool but impractical. Though if you show up to a LAN party with that mouse and an equally creepy rig, you could put up quite a scare to the competitors!!!
How it looks is only a matter of taste. Like those who love rap tend to hate metal music and the other way around kinda thing so instead of saying my opinion about the mouse's appearence I'll just say that the person who did it was not just creative but did it very nice when putting it together.
I don't think its fomfy at all though I wouldnt mind decorating a desk with it f it would fit nicely on it as long as I dont have to play an FPS with it ofc 😛
A steampunk mouse is cool and all, but why the sheep skull? Since when did brass and bones go together? It would be a lot cooler if it was either all brass or all bone - not both.