I just made them consistent. It certainly helps me visually. Also a list implies you intend to evaluate it by executing a function. A vector implies you do not intend to call a function.
Yeah, it's definitely a taste thing, but as the first style isn't used in Lisp, comparing its readability doesn't really make sense. Indentation is important to reading Lisp. Indenting it in an odd way makes it harder to parse. It's a bit like giving
def
foo(x)
bar(x)
end
as an example of Ruby syntax being overly homogeneous.
A Lisp programmer reads those structural patterns, not the delimiters.
Lisp programming is more about thinking of trees of code and their possible manipulation - even independent of a visual notation and especially independent of the exact delimiter used.
The delimiters are in shape recognition much less important than the shape itself.
"A Lisp programmer" ... Sheesh, I am a lisp programmer, man, and I assure you I know what trees of code independent of visual notation is. You're making a point that doesn't need to be made here. It's this kind of phrasing that really turns off people from the lisp community.
I wrote it that way so it's easier for non-lisp programmers to compare with what they're more used to as well.