Quick! Before you get a scratch on your gleaming fingeprint-magnet: get some leather protection from the folks at Prima.
They're selling them in four flavours: flip style or open face (both with and without clip), lateral pouch (with fixed clip) and book style (without clip).

They all come in a variety of Ford T-model colours: aren't you lucky that you just love black?
They're all priced in the 30-40 bucks range. Heaps cheaper than replacing a cracked screen, I reckon.
Just one more thing...

Here's the all important link:  http://www.primacases.com/store/index.asp?DEPARTMENT_ID=287