Is it possible to be a “forum dad” without actually having kids?
Judging by the number of people who've labelled me the former without having the latter, a most emphatic yes. Wear it with pride.
What’s the controller to go for an old and conservative git like me?
Keyboard WASD for movement, with SPACE for jump/jetpack and CTRL for crouch is almost a given unless you have one of those dedicated one-handed FPS controllers. Even if you've never used it before it'll become second nature very quickly.
As for head movement, I tried all sorts of combinations during the alpha including HOTAS axes, hat switches and nubbins, and even TrackIR, but nothing came close to the precision and comfort of a mouse. If you only ever intend to do exploration gameplay, especially since you're in VR, then there may be some merit in being able to control all vehicles and your avatar without ever taking your hands off the HOTAS. But the minute you need to react quickly to something, or to point a weapon at a threat, then The Mouse Is The Way for PC.
Also (this may be more of a personal thing) having the jump and crouch functions bound to HOTAS inputs felt very, very odd to me. Having them on keyboard keys felt a lot more natural for some reason, even though it really isn't, possibly because videogames have a long history of "jump" buttons and keys separate from the directional inputs.
But definitely find space on the gaming desk for a mouse if you can, even if it means temporarily moving the HOTAS stick or throttle out of the way when you're not using it. You'll never need to rapidly switch between flight and first-person so this shouldn't be too much of a problem. Your biggest issue will be doing this in the blind while wearing the VR set, but if you're already using a keyboard in VR and finding the keys easily enough this shouldn't be too much of a stretch.
Caveat: I've not played in VR so I have no idea how much of an impact the "2D world mapped into 3D space" of
Odyssey's on-foot elements will impact any of the above e.g. whether it will feel strange moving your head to the left and the mouse to the right at the same time. All I know is that there is really no substitute for mouse and keyboard when it comes to twitchy first-person gunplay.
Most importantly, have fun!