I have been using it for years as Brian said and would highly recommend it. It is also the first thing I do with a new rod, same as Paddy.
The trick is to apply it lightly, and once dried give it a rub over with some ultra fine sand paper. It leaves a great finish that seals the cork for years. I have a 10ft Sage Z Axis that I bought new in 2013 and the cork has zero filler missing and still looks superb. Apply too much and it's slippy feeling which will annoy you.