csrmel,
I asked myself the same question when I was looking around. The answer is yes, you can put a contact switch in. One big problem though - the time it takes to shift still depends on how fast you pull the lever. While your foot is on the down travel, you're bike hasn't engaged yet.
I asked Brandon at mull engineering why I couldn't just put a switch in and you know what he said?? They've already tried it. It failed in 8 minutes of riding at the dunes. It clogged with sand. I guess they mean it when they say they test everything themselves he said they've actually timed a few riders that shift extremely fast (these are pro riders) and they shift at approx 70ms. But when you count the down stroke of the shift lever this increases to over 2x. That means a pro rider would probably slow down if they used a switch!
Mull engineering says you can shift in about .035 seconds. The reason is that their system kills the bike for only a certain amount of time, that you preset. It also allows you to finely tune the point when the bike cuts out so that your bike only cuts out for a very short time. You can hold the shift lever in the up position all day long and the bike turns back on in .035 seconds. If your foot is a little slower you can make the time longer. I think the fastest setting is for people that are insanely fast though. I'm not quite that fast.
They use a sensor system that's just stupid simple to install and has no moving parts. I was so worried that i would take this thing to the dunes and it would fall apart, but there is no moving parts. The way they tell you to route the wires is pretty cool too. You really can't tell you have it installed.
