When I try to find either \ or | (aka shift+\ or pipe) neither appears when using the T4 notation. I couldn't remember the chord and went to the tuner to find it, initially. I only found it because I had an old cheatsheet.
If I switch to the classic notation style (not the T4) and find a desired keystroke, then I switch to T4 it will show those keys but I will be stuck in T4 with no way to reset the search other than switching back to classic.
Overall the look of the page is nicer than previous, and I like that the T4 notation assumes the twiddler is facing away from you even if I find the old notation more easily comprehensible to me. The classic one, however, makes me pause to translate it since into the reverse. ie, | is 0rmr but the r's are actually on the left as far as my brain is concerned.