Which shoes and cleats/pedals for road riding - MTB or SL?

I have just bought a road bike for fitness training and envisage using it to get out for a couple of hours at a time on local A- and B-roads (I'd like to move on from toeclips I have previously used for less 'focused' riding).
My husband uses MTB cleats to enable compatability between his mountain and road bikes, but we are not sure if they would be the best choice for purely road use. I have been advised at seperate ends of the scale by 2 different shops: road pedals (Shimano SL) to spread the load to avoid pain in the sole of the foot OR mtb to give the ability for a shoe which is easier to walk short distances in, with the soles being stiff enough to do the job really, anyway.
Many thanks
My husband uses MTB cleats to enable compatability between his mountain and road bikes, but we are not sure if they would be the best choice for purely road use. I have been advised at seperate ends of the scale by 2 different shops: road pedals (Shimano SL) to spread the load to avoid pain in the sole of the foot OR mtb to give the ability for a shoe which is easier to walk short distances in, with the soles being stiff enough to do the job really, anyway.
Many thanks
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If not, road pedals.
Road pedals are nicer to use on the road. They give a more secure feeling, I'm a lot happier really putting the power down hard up hills on my SPD-SLs than on my Egg Beaters. I do use the Egg Beaters for commuting though (Well, Crank Bros Quattros to be exact), as the ability to walk is obviously a great advantage when commuting.
So I've just ordered some road shoes with road cleats which I'll use on my 'good' bike come Spring. In the meantime I'm going to continue with the SPDs on the winter bike and the MTB.
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