If you ignore the talent ideas though, the one-roll version is as simple as a normal attack with any penalties involved, if not simpler: Penalty, roll dice pool, spend any successes to hit, increase damage, increase initiative, hit once more with second weapon... that's it.
The fact that I use lots of words and write in roundabout ways and can't make up my mind how I want it to work, or what penalty to choose, or how damage is increased, is a completely different matter

"Life is like a sewer. What you get out of it, depends on what you put into it."
-Tom Lehrer
Make sure your brain is engaged before putting your mouth into gear.