No problems,
I am sure the your clients will love the web client. I do since it is so simple and excellent for user that not do these things every day. The windows client and NCS server is more for lets say the technical users for setting up etc. In the version NCS 1.5 he right click and remove is gone. That was not a secure solution. Now you select the recording and click on a separate button for deletion. On the side of that button an new download button will look very good. I just sent a question for a little download button also in the windows client. It would be excellent there 
Also, when you discuss new IP cameras make sure they support ONVIF and ONVIF PTZ if PTZ will be used. It will be so much easier for everyone.
-Henrik