Ok guy this one's a bit more long winded. Bit of background first. I've been running, purely on a treadmill, on and off for a few years. I'm not a great runner, due largely to my flat feet. I always run on an incline to battle shin splits and haven't been able to run on the road for that very reason. I've got 2 pairs of motion control trainers (Brooks Beast and an old pair of Asics gel foundation 11). I've also done a fair bit of hill walking and have good Salomon boot which suit the over pronator.
Now my hill walking buddy, who also does a lot of road running, having learned that I'm spending more time on the treadmill, wants me to a) do some road running and b) some hill running (he doesn't ask much of me.)
I've read a bit about fell/hill running trainers or trail shoes. And the general opinion is that you get plenty of support and rigidity from them that they don't need to specialise in motion control trail shoes.
Which brings me to my question. If I were to start doing a bit of both of these new activities would a pair of trail shoes be suitable for a road running over pronator, given the supportive nature of an off road shoe? Are they suitable for say 10k on the road ir would they be too heavy and rigid?
And on that same train of thought. If my motion control running trainers provide significantly more support that a standard trainer, how are they likely to hold up to running up the rough terrain of a small mountain? In other words, do I really need to buy a pair of trail shoes at all?