That's my skx on a custom leather strap, and me wearing my girl friends Seiko 5 on a nylon NATO. Plus I have a few vintage pieces.
Great watches, bullet proof, great looking and super affordable for what you get.
If your looking for something dressier may I suggest Orient a brand owned by Seiko that makes some great watches also.
Honestly I find I wear my skx a lot, and have invested more money in custom straps for it then I paid for it.
I doubt you will find anyone on this forum that will have anything negative to say about Seiko. The only downsides are honestly unimportant, most on the affordable end do not hack or have manual winding, that's it. But the Swiss asking 10 times more and the multiple startup brands using less robust movements and asking 2 -4 times as much should be embarrassed by what you can get with Seiko and Orient. Swatch has the "revolutionary" sistem 51 watches that are well received but they are a joke when you compare them to Seiko.