Significant caps or caps used by convention to separate syntactic elements was quite common for a while when syntax highlighting was still relatively rare. E.g. AmigaE [1] is another language which heavily used caps (correct case was a compulsory part of the syntax).

You get used to it quickly, but I can't say I miss it.

[1] http://strlen.com/amiga-e

Personally I hold the shift key with one of my fingers.

TextExpander or other macro generators are your friend. Type one keystroke, and a few dozen characters appear.