Regarding the EL ergonomics they are hardly a much better bin, nor are the optics better; but, you may prefer the optical characteristics of the Swaro's such as the edge to edge sharpness just as I prefer the optical characteristics of the UV HD Plus line.
I currently own the 3 UV HD Plus' listed below, I have had the Zeiss HT in 8x42, and I have spent hours with the Swaro's on safari as well as with the North Alabama Birding Society swapping with other team members.
While admittedly if you are susceptible to rolling ball, safari is the last place you want to use Swaro's because you are panning so much. Having said that, the Swaro's have better edge to edge sharpness if that is important to you, but do not have quite as pleasing an image as either the Zeiss HT's or the Leica UV HD Plus.
My favorite image of any bin you can buy by a hair is the Zeiss HT 8x42, followed ever-so-closely by the Leica UV HD Plus. Then, taking into account the Leica's outstanding contrast, extreme brightness, saturated and brilliant colors; along with the industrial design, all in a small stout and silky package with perfect mechanics, they are above all my go-to bins being for me the best money can buy given the total package. On vast African savannah's, I found the UV HD Plus immersive for mammals and birds. For others it will be something else. I still own an older pair of Zeiss that once retailed for $1,899 that I love.
I just returned from safari near Kigali Rwanda with the UV HD Plus in 7x42, see my report on this sub-forum.
Pic 1: Fish Eagle surrounded by Black Headed Weaver's taken free-hand (without adapter) with the iPhone 6Plus through a UV HD Plus 7x42; Pic 2: 7x42 and 8x42 UV HD Plus' in international travel mode. Pic 3 is Pic 1 cropped.