The hardware is still valuable if for some reason litecoin is not, but with all the new money pouring into altcoins (hardware and markets) I don't foresee some altcoin, somewhere, not being profitable to mine. Of course all of that probably rides on BTC's sucess, or rather anything but faceplanting.
If you have hardware right now it's likely to be paid for before the month is over (assuming you bought at launch retail prices or lower) Ordering now is a gamble the same as bitcoin ASIC pre order, but to a lesser degree as it's much harder to scale LTC rigs. If you can pay for it in a month, mine another for pure profit, then sell the hardware at 50-75% invested and you've made out like a bandit.
Of course the train might just be at station, ready to pull away. If that's the case you won't want to sell, and hardware will continue to be backorder only.
I could continue, but you should get my view by now
