While it might be reasonably assumed that as a long/longish term member and enjoyer of both sites I would see this as a positive, and not wanting to appear 'creepish' what I would say is that after trawling thousands of posts on his other forum I've never seen Otto lie to anybody.
If I've been happy for SpDude/Yusef to keep us basically afloat as a 'sleeping' owner for a time then I'm much happier to see a confirmed WW2 enthusiast take over the technical reins, whether he has a.n.other forum or not.
The biggest problem is perhaps a perception of a conflict of interests. The 2 sites have hugely different 'personalities' while still remaining (mostly

) civil
& entertaining, quite rare on the internet, particularly amongst 'general' ww2 forums. I would genuinely think that Otto is capable of keeping the 2 identities seperate.
Many of us on both forums are aware of the other and have been for a long time, people have always been able to choose whether to join/post on one or both and will hopefully continue to be able to do so as long as they keep their distinctive flavours, and the flavour can only ever be made up by what we, the membership, choose to post.
Ramble ramble.
Blah blah.
Adam.