I originally bought 2 pairs of these trousers in January 2011 for my DofE expeditions; but they have - since due to their comfort and surprising stylishness - found themselves in my daily rotation.
Let's start from the beginning, I have an low waistline to leg length ratio, so had to shorten the waistline myself; but don't take this as a blemish to the trousers, this is a procedure I have done to almost all of the trousers in my wardrobe. The waistline itself is elasticated and has a total of ~10cm free play without losing tightness, which adds some much needed comfort when scrambling over limestone boulders. There is also some extra length in the hem (where your walking boots go) so that they can be lengthened if necessary.
The material is very hard wearing, and has survived scree runs, barbed wire, attack from thick thorny vegetation, river crossings, stray knives, stabbings from tent pegs, and the odd inquisitive sheep, without showing a scratch. Pen ink, however, will stain the lighter colour trousers - although, with repeated washing, the stain will fade. Mud and blood is no problem for the trousers, and washes out in a normal wash with normal washing powder. With repeated washing, the fabric will not bobble.
The legs are wide and roomy, meaning that they are not constrictive at all. Even when wet, the trousers are comfortable enough to walk extended distances (~16 km) in.
Pockets........... It's fair to say these trousers have "enough" pockets - they have 9 very generous pockets. About A5 (paper) size, they're definitely large enough for a point & shoot camera (in fact, each pocket could fit 2 cameras - 3 if you're good at Tetris).
Zips - I know it's an obscure review topic, but zips are the silent killer of most trousers. The Regatta Action Trousers, however, have very good quality zips. They are generic, but are YKK quality, and the plastic zip strap is chunky - meaning that the teeth are very unlikely to collide and be ripped out.
The bottom line - You can't ask for more from these trousers, they look smart, are extremely rugged & comfortable, and can be easily tailored by anyone with a sewing needle and thread.