Will bot denied "Custom Acrylic" looks great when you first receive it and setup in your cabinet.
The only possible pros, that is lighter than a glass sump, and able to sustain an accidental impact. However, eventually this beautiful custom expensive acrylic sump will get nasty, dirty and will accumulate multiple scratches from cleaning the sump. Finally, what is the point to have an expensive custom sump hidden in a cabinet because your the only one that see it. When family, and friends come over to visit you, there only interest is your fish an corals. Not the setup hidden in your cabinet below. You tried to explain the expensive sump below and they say "oh" , Sorry but it's true.
I have owned several acrylic sump in the pass years, and the most paid for was $250 for 36 x 16 x16 built by Advance Acrylics that was many years ago. Now present time these custom acrylic sump are price from $500 - $1000 because the color acrylic and probe holders..lol
Through the coarse of the years I've went DIY, just recently I built a DIY sump and DIY breeder tank. If I went custom acrylic I would have spent over $1200 and I spend only $200 for both tank and sump.
Just a comparison, a 40g custom acrylic sump price over $500
I spend $40 for the 40g breeder glass tank, and $60 for acrylic baffles from Melvreef. So this sump total cost $100
Bottom line acrylic vs glass will do the same job. DIY works for me!