Ditto. I recently upgraded my EDC multi-tool to a Leatherman Surge. I also wanted to carry the bit kit and socket extension. Leatherman's own belt pouch for this is laughably bad:

http://www.leatherman.com/surge-premium-leather-sheath-314.h...

After searching around a little, I did find this guy who makes really heavy duty sheaths:

https://www.etsy.com/shop/Nayscustomleather

It is a bit bulky, but it is likely to last the lifetime of the tool itself. Very good quality.