Not exactly. Asym lighting like the Edelux and Cyo use a rear-facing LED and the reflector is responsible for the shape of the output beam. That method is concentrating the light where it needs to be; on the road.
Taping over a standard front-facing lamp with a symmetrical reflector can help reduce some of the top spill light loss, but you're not actually putting it anywhere useful, so you're just losing out on some of your lighting power.
A better option is using aluminium tape and affixing a hood to help control the top spill loss, which could help reflect it back down to the ground in front of you if you use something metal. Someone here on the forums did that with an older model Supernova E3 light, with good results.