The following thread found at czforum.com explains it all:
http://p201.ezboard.com/fczechpistols82792frm25.showMessage?topicID=92.topic
Basically, they say there's nothing wrong at all with carrying with the hammer down on a loaded chamber (condition 2), due to the firing pin safety. OR, you can carry cocked and locked (condition 1), should you prefer. The site (unofficial I might add), describes how to manually decock the gun according to cz's own operating manual. It is a two-handed method which is safer than the one-handed method.
The CZ75 comes with either a safety OR a decocking lever. It appears that basically, this is a tradeoff. Models with the safety allow the freedom of carrying in condition 1 OR condition 2. However, to carry in condition 2, you must manually decock the hammer, which is less safe than doing so with a decocker. Models with the decocking lever, however, are safer to decock, but are only to be carried in condition 2.
Anyone disagree?