The Future: Interesting. Please elaborate your statement.
Loki: 16st at 8mm? You are quick! Are you currently a heel-striker? I assume yes. The "easy" way is to be patient and let your body adapt slowly to Pose/midfoot running. The good news is that you probably have incredibly strong legs, knees, ankles and feet.
So there is no reason why you can't follow Pose techniques for running. I know at least one forumite who started running in Pose and is similar weight to you. AFAIK, he trains and races in NB150 racing flats (I think he may train in Puma H Streets now but I'm not sure). Be warned: both these shoes have very little heel-cushioning - see below! There are other shoes described in the
Lightweight trainer thread.
IMHO, you're doing the right thing by getting the hold of the DVD/book. Even for a lightweight/fast runner my main advice would be: run midfoot exclusively in lightweight shoes with little heel cushioning, don't mix styles (ie midfoot and heel-striking), cut your sessions in terms of speed and distance, slow down, take your time to learn the technique. If you rush it you'll heel-strike and doing that in lightweight shoes will definitely cause you injury to your heel, achilles tendon and calfs!!! You must be vigilant to run midfoot when wearing these shoes - so keep it slow and your form will hold.
As well as that, I'd recommend you try out a couple of barefoot sessions. Perhaps around the house, on a nice flat clean cricket pitch or on a treadmill. Again initially keep your sessions short and slow and let your feet get stronger.
You don't have to run like the runners on the DVD. Just try to get the feel of running midfoot and landing below (just behind) your hips (general centre of mass). Keep your cadence high and lift the feet just high enough to take a step and in order to land midfoot. Don't try to run like a reject from a Riverdance concert.
Best of luck.