[Brightcolours]

Sure, it's big, but not enormous.
It's quite a unique proposal in the APS-C world though. I'm sure many landscape photog will be jumping on it.
 
Personally, I find the Olympus 9-18 to be the perfect compromise for travel/landscape work. It's amazingly tiny and good optically.

Of course it is "amazingly tiny", it is a 12-24mm f5.3-7.5 APS-C equivalent (or 18-36mm f8-11 FF equivalent), it better be tiny compared to the Fuji 8-16mm f2.8. 
12mm vs 8 mm, not really a lens to bring up in this thread 
 
The Olympus 7-14mm f2.8 makes a bit more sense. At 105.8 x 78.9mm and 534 grams it is almost the size and weight of the Sony 12-24mm f4, and yet is equivalent to a f5.6 FF lens.

I find the EF-M 22mm f2 perfect for travel work, and the EF-S 10-18mm f4.5-5.6 IS STM perfect for UWA travel wide angle landscape shots. Also not lenses to bring up in this thread