For anyone curious about how this combination works, it can be best described as fast, very fast.
I've only had a few minutes with the setup so far, with most of the time being spent adjusting collimation, focus and cable management. I started first with M51 (average of 5 exposures of 4 seconds). After tweaking the collimation I had to find another object as clouds in - M13 was next. After another set of short exposures (average of 5 exposures, 1 second each) and tweaking the collimation once more, I moved on finally to Antares as the clouds encroached even more. I was only able to get 4 exposures of 2 seconds each before the clouds and threat of rain brought an end to the testing session.
I am very pleased with the results so far. I was particularly impressed with the performance on the fainter targets as they were clearly visible on the laptop screen in real time. The short exposure times and fast download speed (mainly due to the relatively small file size of the 414EX) should lend well to using this setup for widefield deep sky imaging and for outreach efforts.