Thank you for your hard work and here's my observation so far;
Like you said, one needs to use your provided driver in order to driver the Spyder3. Uninstalling of the original was a little hassel. Once the driver is installed, everything is fine.
For the i1D3, I use the preinstalled xrite driver and HCFR simply detects it and works fine.
Now comes the problem, when you have these two colorimeters plugged in together, HCFR will crash right after you press 'NEXT' in the greeting screen!
I haven't tried my i1D2 because I don't think I will be using it but I will try the i1Pro tonight and see what happens.
One last question, is the 'meter profiling' working?