Is there any need to have XnView beside XnView MP?

[bege]

Hi,
I used XnView for a long time, then added XnView MP because Pierre recommended the improved feature to categorize photos.
When I changed from Windows XP to Windows 7 64-bit I only installed XnView MP. The only problem I came across is that the Media Detector cannot open XnView MP but only XnView. Well, that's not too bad.
I thought XnView MP would become the follower of XnView. But XnView is still developed. So my question is: Do I still need XnView beside XnView MP for any operations that XnView MP cannot accomplish or accomplish less good?

[xnview]

If XnViewMP has all features that you need, XnView is not necessary