[MetalMan]

For upgrades down the road, I mean future purchases. I say upgrade because Lipo technology is always improving, and unless something went wrong there might be a better pack that is a direct replacement (size and weight), but would be more powerful and have higher capacity. With the Scorpion system, if they don't come out with new cells, then you'd be using old technology (possibly obsolete). But, if you get a charger like a Duratrax ICE and a balancer, you could have a setup that would work with a battery in several years.
Since the Scorpions are proprietary, you have to buy 2 batteries to replace the original set (if they started fading), and that would cost $220. If you were to replace these Hyperion packs, the price would be only $170. Another thing I forgot to mention with the Scorpion setup is that you can only charge one battery at a time. I know that you can charge a battery to 90% in 20mins, but that decreases the number of life cycles that the battery will provide. By how much, I'm not sure.

As for the weight comparison, two Hyperion 2s 3700mah packs would only weigh 384g (together), whereas 2 Scorpion 3200mah packs would weigh 456g, for a difference of 70g. You might want to factor in the LVC weight, but that's only going to be 10g maximum. So, the truck's performance would increase from the higher availability of amps (you know what I mean), and the fact that it won't pull as many amps because it is lighter.