Yes, these two binoculars are very much on the extremes of eyecup style! The CL has unnecessarily small eyecups, despite having huge oculars, the eyecups are about as small as you'll find on a non-compact binocular; they are even smaller in diameter than the already skinny diameter of the optical tubes. The Genesis 33 has thick, wide eyecups with a rounded edge but no taper.
I'm unfortunately in the middle on these two, I with the Kowa eyecups had just a bit of taper so they were slightly skinner at the point where the eyecups is touching your face; those straight sides with no real taper are problematic for people (like me) with somewhat narrow IPD.
Interestingly the Swaro isn't THAT much smaller than the Kowa in length, although it's much "skinnier" and quite a bit lighter. I will quibble a bit that the Kowa is "on the heavy side" for a 32mm; it's about 590g, which to me only feels heavy in comparison to this more recent generation of 8x30 types that pushed below 500g for premium-ish optics. Prior to this, the Ultravid was the lightest premium 32mm at about 535g. But the Ultravid is considerably more compact than the Swaro CL.
Compared to, say, the Ultravid 32mm which is obviously much smaller than the Kowa:
One more size comparison, again as you can see the 8x30 CL, despite the sub-500g weight, is not THAT much smaller than the Kowa 33mm or Conquest HD 32mm.
Others have covered the optical differences well -- the Swaro CL has an avg FOV, but it's extremely well corrected, sharp almost to the edge. The only real optical flaws of the CL (besides the FOV) are a bit of CA and some peripheral flares in harsh light. It has outstandingly easy eye position.... well it would if it had eyecups that fit me better.
The Genesis has a wider, more immersive view, better glare control and first class CA control. The disadvantage is the smaller sweet spot, as Kowa's attempt to flatten the field results in a blurry ring part-way to the edge, such that the edge is slightly sharper than ~70-80% off axis. There's also heavy compression of space (AMD) at the edge.
The ergonomic differences are significant, not just the eyecups, as you can see in the photos and the comments above. The Kowa is a traditional single hinge with more "chunk" and space to put your fingers on top; the Swaro has a high bridge with skinny, open barrels so if you like to rest the fingers on top (vs wrap around) they aren't as ergonomic. The Swaro also has a harder texture, the Kowa feels "cushier". The focus knob position is a big difference as well -- notice in the photos how close the focus knob of the Swaro is to the ocular end, vs the more centered position of the Kowa's knob.
I greatly prefer the Kowa ergonomically, and I think the focus knob position of the Swaro exacerbates the clunky diopter mechanism, it's so close to your forehead that it makes it a nightmare to adjust while using the binoculars.
Personally, if I wanted a lighter/smaller alternative to the Kowa but with still very good optics, I would consider the Monarch HG 8x30 instead. It's more compact than the Swaro, with a wider FOV and better close focus.
