It is a totally different aspect having him around. My DH is pretty much hands off when it comes to birthing. He cannot get a cap on his anxiety, and it spilleth over into my space lol. I usually end up barking at him to get get get about halfway through. When he reappears I know I am getting close to pushing. (which never takes longer than 90 seconds) He has an odd way of knowing when to come catch. It was funny last pg too because I still had 9 days til my due date and he was washing the mandatory stash of towels for our home water birth. I was so mad cause I felt like he was saying my grouchiness was due to pregnancy and not taking me seriously
12 hours later my water broke and 10 hours after that he was catching our son.
Totally different from my first two which were very much solo (different DH)
Anyway, I hope you have a beautiful shared birthing experience, and things go smooth and full of joy! Very Exciting!