Just to add to my last post iIshould also point out that what you carry in the field is a personal matter. Apart from the ammo, rats etc etc. If you do want the latest head torch or webbing belt, thermo insulated mug, self heating pocket warmers then this type of stuff is rarely general service issue so you will have to pay a visit to the high street.
On the boots front I was involved with the trialling of boots. We discovered that the lab results were completley contrary to the customer survey results. ie the Permovapour boots which turned uncomfortable very quickly because of multi layering and rucking, and which retained water for same reasons were the boots of choice for the troops. The reason for this was the Gucci label on the boot (G*retex). The troops saw the label - read across to the Silverman's catalogue and saw boots coming in at nearly 150-200 sterling and thought hmmm expensive boot - must be the best. I suspect this applies to some extent today with troops looking at the service kit automatically as second best and preferring the the ones from the catalogue worn by the Kays catalogue storm trooper head to toe in black neoprene carrying the MP5K.