In the project I work on our style also requires block-parens. Sometimes it feels unnecessary, but it does make up in terms of consistency: it's easy to glance through the code and inspect the conditions only.

I got used to this quite a bit and these days if I write code outside the project I work on, I d sometimes omit the block-parens, but I always add extra indentation to ensure the condition is visually well-separated, e.g.:

  if (condition1 || condition2)    execute_foo1(with_bar);
  if (condition3)                  exectute_foo2();