Is there any down side to bearded awesomeness....?
I guess when there is some serious bird nest issues going on leading to visible debris, which can be quite intimidating when confronted with! No need to over obsess, but some basic taming and pruning doesn't go amiss.
Beard combs are a valuable tool, yay or nay....?
Personally I have never used one, but I expect they do help out occasionally when the need arises and some serious maintenance is required.
Men can spend up to £20 on a decent beard oil. Is this ok....?
Haha, I guess, but I always think the best thing to do is keep it simple. Coconut oil covers everything hair related!
Would you be comfortable telling him if he needed to remove some left over dinner from his face forest....?
Of course! As I said, debris is a no no.
Is there a point in which the beard becomes too long? Is wizard level acceptable?
For me I think I would find wizard length pretty intimidating, but hey it's your beard, do whatever you fancy with it and take on the world.