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We climbed Tom a' Choinich several years ago, in 2003. It was my 3rd munro, so it was enough for us having climbed that summit, and we didn't mind leaving Toll Creagach alone. We took the south-east ridge of Tom a' Choinich. There was a path all the way long which was steep but without any difficulties (as far as I remember). It was a nice day out although it rained a bit on the way down and although we didn't find a walking pole.
Now for some pictures which are 5 years old:
the south-east ridge of Tom a' Choinich from below:
the same from near the summit:
and the views to the south-east during the descent: