Your iPad will not communicate directly with your IP2SL, they will communicate via your local data network. IP2SL is connected with a cable, so it doesn't matter if it's hidden. The iPad connects over WiFi, so as long as you have a good signal you can control your Meridian equipment.

Regards, Erik
Meridian G68ADV, HD621 and vMSR
Dune HD Max, SB Touch, VU+ Duo2, Sony CDP-X303ES, Denon DP-59L, Goldring 1042, Harmony Design V9
Advantage P1, Anthem MCA 3, Dynamic Precision PA4000H, NUC HTPC, ATV 4K
Revel Performa3 F208 and C208, Mirage OM-R2, IB sub 2x18"
Sony VPL-VW95ES, Lumagen Mini3D, Stewart ST130G3 2.35:1 116"