L3 Roaming in Wireless

Hi r/networking! Long time lurker here.

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Where I work, we're looking at deploying a new wireless network. The current network is Cisco based, with WLC. But for the new network, we are thinking about deploying a Mojo (Arista owned WiFi vendor) network. During our researches, we found that it does not support L3 roaming. Our office network has a lot of subnet, historically, we have a subnet per ssid/per floor.

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Here's the question: Does any of you fine people have deployed MoJo Wireless in larger office/campus with a lot of subnet? Has the lack of roaming been an issue for you? We're thinking turning off all 2.4GHz wireless, so bleed between floors would be less likely, but I'm still not sure if the lack of L3 roaming is a deal breaker or not....