|It took me half an hour to get RAdmin CS set up and working. So I don't exactly find it intuitive. Skype took me 5 minutes to install and start talking to others.|
Do remember that Skype accesses a server which is already installed in a given location in the World, while for a more private setup, such as RCS/RCC you need to install both the client and the server, which makes it, indeed, a slightly more complicated task. Once a server is configured in your enterprise, however, users only need to install the client. That brings me to a "Feature Request".
It would be nice to be allowed to customize the installation package, perhaps through a small config file, which would contain the local settings, i.e. in which system and port the local server is configured. That info could be used by the RCC installation utility for a more intuitive install by users (they would not need to set up where the server is located, etc.). I believe this would greatly simplify the deployment of RCC in a company.
With regard to voice quality and delays we should indeed await the final release, but if I did understand right RCS/RCC uses some sort of cryptography for added security in the communication in the enterprise level. Cryptography, depending on the algorithm employed, would explain some of the delay you mention, as the audio is not simply captured, compressed and transmitted. It must also go through the cryptography stage. In a final release some algorithm more fit for real-time cryptography may get to be used, also some audio coder which provides better quality, etc. So, as disclosed above by G. Petrov quality-wise issues should be compared in the final release (or last betas prior to release). At this early stage I'd guess that mostly functionality issues are being sought for.