I personally would not play you even if you only fielded one imperial knight at 1,500 points. Mainly because they skew the balance of the game entirely to your favor.
That said I know a lot of my friends would love to build a list towards playing that. However those games are usually pre-planned; a random person coming in and going "hey, let's play - I brought imperial knights" is, in my opinion, not the route to go immediately. If you talk to the people that you're likely to play against and inquire on their interest in playing against such an army, that is probably the easiest way to go about.
Originally Posted by neilbatte
if you squint the Sigmar stuff doesn't all look like the love children from a Necron and Blood Angel orgy.