Some great post, vids and words of advise here, dealing with ex's, relationship with kids and gear. Enjoy your hobby with your new son.
EVS's are great and inexpensive, both my kids and myself have worn. I agree with Travace, perfect choice for kids who trail ride, plus they outgrow their gear way too fast. Does not restrict movement, easy to get used to. Last Xmas, I moved my oldest to a Leatt, paid $275 at Cycle Gear. Figured it would work well for him for several years. He likes it better than the EVS, the weight is evenly distributed, says he doesn't notice it being on. I've made the neck brace/support just as important as a helmet. Both my boys know the rules... no gear = no ride. They've been very compliant wearing all their gear, now it's 100% habit for them. I feel good about this, as in 4 yrs my oldest will be 18. Won't be long before he'll want to head out alone with his buddies. This will be the time when I hope all I've done to lead by example in gearing up correctly has hopefully stuck with both my kids when I'm not around to enforce.