I use KiwiGrip on my deck
KiwiGrip has a consistency similar to yogurt. If you glop it down and spread it out with the roller it will develop high points that are quite jagged as Chotu indicated.
If you use a serrated spreader like the West System 809 Notched Spreader
you can better control the 'aggressiveness' of the tread.
I used the large notches for an aggressive tread on the foredeck, cabin
top and side decks, and a less aggressive tread in the cockpit
sole and seats.
But, even then, it does take some time to 'wear down' some of the sharp projections. Hint, you don't want to be working the foredeck and drop to your bare knees a day or 2 after application.
There are some downsides...
If you don't follow the directions you won't like the outcome.
If you don't practice a little you probably won't like the outcome.
If you don't prep the area you won't like the outcome. It will not adhere well and it will peel or bubble up in that area.
If you try to apply it to a large area rather than work
in small patches you probably won't like the outcome.
It might be difficult to keep clean (I say 'might be' because when I was in the PNW
I used light gray and it seemed to get dirty pretty quickly and the only way to reasonably clean was with a low power
pressure washer. And, the marina was in the flight path for Boeing field and SeaTac. Prior to leaving for Hawaii
I redid the decks in white, and for the past several months it has remained nice and clean.)
Application around deck gear
sometimes looks a little sloppy. (The paint sand/silica application is easer to get uniform look esp. around deck hardware
Once you use it, you are more or less stuck with it. It sticks really well for a water based product, and is pretty thick, so removing would take quite a bit of sanding
Once it cures make sure to wash with a stiff brush and cleaning
solution (no wax) otherwise it will feel 'slippery' the first time your deck gets wet.
It does provide great traction when applied correctly.
It looks pretty darn good (better than sand/silica IMHO).
You can control 'aggressiveness' of the tread (to some extent).
It is really easy to apply.
Clean up is easy (water soluble).
It lasts a very long time. I first applied KiwiGrip (light gray) to my decks in 2015. I did not need to reapply during that time. (I reapplied in 2019 only to change the color to white, and I hope I don't have to reapply for another 5 or more years.)
IMHO, it's way better than any 'molded in' deck antiskid.
Some people love it, some hate it. (Honestly, I have a love/hate relationship with it, but mostly like it.)