The 10x35 Nikon E2's have a smooth focuser and wider eyelens and cups, but you give up some aperture and add some false color. For me these two are easier and more comfortable to grip and hold than anything but the Zeiss SF 42mm's, that's a big reason to use them. Also the 3D stereoscopic factor is nice and unique.Thoroughly agree, the habicht series are a class act. Arguably the best CF Porro's money can buy.
It's also a bit of an enigma. You could change them with wider field eye lenses, twist up eye cups, a lighter focuser and more eye relief but all these featured dilute the view, robbing photons, lessening waterproofing and adding weight at every stage with yet another piece of glass - and making them less rugged.
Will
At 21 and 24 ounces they're lighter than most 32mm and 42mm roofs.