I have the FJ Countor Casuals.  I wear them primarily off the course because they are so comfortable.  But they do offer enough grip for me to also wear them on the course.  I wouldn't wear them on a hilly course or when it was wet, but for average low stress rounds, they are great!

I love the comfort of spikeless shoes, however; there are times when spikeless shoes will slip. If you're playing on very firm conditions or frozen ground they don't seem to grip as well. Courses in excellent condition typically aren't an issue. After trying to FJ DNA, I have switched back to spiked shoes. They are just as comfortable and lightweight as spikeless shoes and virtually no slipping. A couple of huge benefits are that you can wear them to the course and not have to change shoes once you finish and they do not not need to be cleaned as often during the round if you are playing in wet conditions. Hope this helps.

I have the FJ Greenjoys Casual and really enjoy them. I prefer to wear them when I'm walking the course or it's dry out (I'm still not sure I fully trust them when it's wet). They've been great so far and may just be the most comfortable golf shoe I've ever purchased. I do also have the FJ Superlites that I like to wear on occasions. Just depends on my mood and the weather.

I bought a pair of swoosh spikeless golf shoes once. And 'once' is where that number will stay. Never again for me.

Dave,

I never thought much about them until last year. Ended up buying two pairs of Contour Casuals last year, and just bought a pair of Contour Casual boat shoe style a couple of weeks ago. They are super comfortable and for the most part offer good traction: can't beat them walking a fairly flat course. If it is kinda wet or a hilly course with silly stances, I will wear one of my DryJoys pairs.

They do not work on my course, at least for me. It rains throughout the year here and the course can be wet and slippery. 

It is worth having a pair but they can slip on the course once in awhile!!

I've been rotating my spikeless in with my other pair quite commonly. Love them, but if you play very early in the AM you may not want to use them based on the amount of dew on the course.