I have been using a pair of 10+15 Duovids on a tripod for the last few years for hunting Coues. Did some side-by-side testing against the Swaro 15s, both on tripods. The resolution was indistinguishably equal. I prefereed the color tint of th eLeiccas, seemed more natural. With the 50 vs 56 mm objectives, the Swaros had about 3 minutes more viewing time as dusk passed. If 3 minutes makes a diff when you use them to look 1/2+ mile away the last 3 minutes of light, you move faster than me. With the Duovids, I do like not having to carry two pairs of binos and a few extra pounds of optics.
RR