I just saw it as an option since I wrecked my lens.

Could you point me to any good insurance companies? I'm looking at adding some more lenses in the not too distant future.
Ive got £5k (non proffesional use) cover on my household contents insurance with direct line - the additional cost was about a fiver which beats any specific policy hands down.
One thing i would say about the nifty is that the mk2 is a pretty fragile piece of kit (which is down to being built down to a price), I killed one once knocking it off the coffee table on to a carpetted floor. My advice would be to try and find a mk1
second hand (about £120 normally for a good one)
Also don't sweat it - accidents happen and we can't be to precious about our kit or it would never leave the house - in total in the last 18 years I've had the following:
A pentax MZS and 400mm Sigma - Rolled over a floating hide (write off - replaced by insurers)
A Canon EOS3 and 170-500 sigma - Was round my neck when i fell out of a RiB while photographing gannets (lost - replaced by insurers )
A Canon 10D and 70-300 - was hit by a large wave also on a gannet trip (Camera okay (inside plastic bag) - Lens written off , didnt claim)
A 170-500 - Hit on the front element by a cricket ball (repaired on insurance )
A 90mm Macro Tamron - Hit on the front element by a pouncing leopard (technically that wasnt killed as it was repairable but the insurers said it was uneconomic and replaced it)
A Fuji S602 Bridge camera - lens pecked through by an irate ostrich at Marwell (write off , didnt bother to claim)
A nifty - rolled off coffee table (ditto)
A canon 300D and kit lens - Dropped while shooting motorbikes from the back of a pick up truck. (Write off - didnt claim as not worth it)
Eos 30E and 28-135 IS- stolen off the front seat of my car while I was filling up with fuel (replaced by insurers)
and lastly (for now) a sigma 18-200 - front element dribbled on by a giraffe also at marwell (Girraffe spit is corrosive and totally shagged the front element coating (note self use a filter next time) ) (repaired by insurers)