Thanks for the suggestion Catrin... I agree .... I will get a mtb helmet ASAP and I can keep using the one I have for commuting and events and get a new Roadbike helmet later.
BTW I am off today and heading to the trails in a few. Yay!!
Nothing wrong with just using the commuting helmet for the road bike, unless you just want a third helmet ;) Both of my helmets are mountain bike helmets, though the one I use for actual mountain biking is beefier than my other one.