Well, my other Modulus 6-string has 18 or 19mm spacing, and to be honest I don't notice much difference in which chords I can play easily on one bass versus the other. It's the getting from one chord to the next -- or one note to the next -- cleanly, quickly, and without unwanted extraneous noise, that seems most impacted by the wider spacing. And conversely, depending on what type of part I'm playing, often the plucking hand is more negatively compromised by the narrower spacing of the SPX bass.
The thing I would offer re: playing chords on bass, regardless of how many strings they have or what their string spacing is, is this:
Just because you can play it doesn't mean you should.
iow, if you had some hypothetical 6-string bass guitar that was as easy to play full six-note chords on as a typical electric guitar, you might be tempted to play full six-note chords on it.
I would caution one to listen closely and decide if that's really the sound you want to be making. There's a reason most of the guys who play chords on bass use simple 3-note shells, or drop 2 voicings, or their right hand to tap a low note a couple octaves below the upper structure partials, etc.