I would be worried about the silicone getting into the pores of the acrylic wich might affect the weld on 16's strength and ability to bond correctly.
I have worked with acrylic for about 3 years now and just from experience I recomend using weld-on 3 or 4 or 40 because weld-on 16 shrinks at least 30% so its hard to get a perfectly clear glue joint.
I really like the design of the wet dry man it looks pretty good.
I made sure to scrape the acrylic edges with a razor blade to remove
silicone until I started getting shavings of acrylic coming off. Insuring clean
My edges were not perfect, so I used #16 to get a better bond on the
irregular surfaces. Then I went back and "sealed" all the critical joints with
a bead of silicone again.
Now, its held to together with acrylic cement joints and sealed with silicone
instead of sealed and held together with silicone only.
First try at working with acrylic, so wasnt expecting a "perfect" job.
As a much learning experience as anything.
I'm sure it will get chunked for a better design after a few months of operation, lol