18200 & DH1758 1.7x extender

Hi,

I currently own the 55-210 and love the DH1758 1.7x extender I bought for it, works perfectly with a step down ring to 49mm.

I'm dubbing wether to sell my 18-55 & 55-210 and buy an 18-200 lens. Does anyone have expirience if the DH1758 plays nice using a step up ring for the 18200?

Thanks!

Martijn