Hi Welkin,
I'm afraid the two versions are not compatible with each other, so we cannot run them side by side. We have set up the new system so that, if you want to use it as the old system, you can still do so.
You can watch
this video for a few tips on how to use the new system like the old one.
As far as speed is concerned, we have installed two massive new servers so it should actually be faster than the old system. Could you let me know which area is slow for you?
Some people have commented about the lack of visitor search information compared to the old system. That will be back next week, we just had to temporarily disable it for the new system.
If you have any other problems, I'd be very happy to address them.
Ed