In reply to captain paranoia:
I was in the vicinity of Aldi on Friday and curiosity propelled me in.
It's a nice flat bottle which has, as you say, a rather long neck on it - but, apart from stability issues, it's the colour that would put me off (nasty shade of green).
Would, however, have been ideal for that time we had a "posh" picnic at the top of Snowdon - a half-decent Merlot poured out of a Nalgene bottle wasn't quite the tone we wanted.