Hi Fabrizio,
Your Surface Laptop Studio 2 should be capable of supporting two external portable monitors.
Based on Microsoft's supported display specifications, you can use two external displays at up to 4K resolution (4096 × 2304) at 60 Hz each.
However, there are a few things to consider before purchasing:
Resolution and refresh rate: Although your portable monitors support 144 Hz, you should expect up to 60 Hz per display when using two external 4K monitors.
Connection options: Check whether the portable monitors support USB-C DisplayPort Alt Mode. Your Surface Laptop Studio 2 has Thunderbolt 4 / USB4-compatible USB-C ports, which can support external displays.
Docking station: If you plan to connect both monitors through a dock or hub, make sure it supports dual 4K displays at 60 Hz. Not every USB-C hub supports this configuration.
Power requirements: Some portable monitors require additional power, so check whether they can receive sufficient power through USB-C or need a separate power adapter.
My recommendation: Before buying the monitors, verify their exact model numbers and supported input connections. This will help ensure compatibility with your Surface Laptop Studio 2.
You can also refer to Microsoft's official documentation: https://support.microsoft.com/surface
Hope this helps!