SpaceBlade zones - how granular?

How fine grained are the multitouch zones on the SpaceBlade?

With regard to modifier zones for accessing stuff like the green layer and command / control functions - how many discreet segments along the SpaceBlade are there and can they be used to define a custom size and location for each of the modifier functions?

I might expect some people would want to tune this in various ways. Firstly if your typing style leads to false positives where the space + following key results in a layer shift char instead of space then a char. Also if configuring extra zones for accessing custom stuff like macros I can imagine wanting to lay that out with some care, perhaps with small dead zones separating active ones.