If you want to go from DAZ Studio to Bryce you don't have a choice, you have to install it.  The installer is very similar to the Bryce 6 installer but it only installs the patch.  I didn't have any issues with it when I installed it and I kept my Bryce 5 and Bryce 5.5 installed on my computer.

Hugz from Phoenix, USA

Victoria

Remember, sometimes the dragon wins. Correction: MOST times.