Karabiner-Elements setting for Kinesis freestyle2 only for Windows version with disabling for Mac. `location_id` should be replaced for your Kinesis freestyle2.

kinesis_freestyle2.json

{
  "title": "Kinesis Freestyle2",
  "rules": [
    {
      "description": "Swap only for Windows",
      "manipulators": [
        {
          "conditions": [
            {
              "type": "device_if",
              "identifiers": [
                {
                  "vendor_id": 1423,
                  "product_id": 37904,
                  "location_id": 336794624
                }
              ]
            }
          ],
          "from": {
            "key_code": "left_option",
            "modifiers": {
              "optional": [
                "any"
              ]
            }
          },
          "to": [
            {
              "key_code": "left_command",
              "lazy": true
            }
          ],
          "to_if_alone": [
            {
              "key_code": "japanese_eisuu"
            }
          ],
          "type": "basic"
        },
        {
          "conditions": [
            {
              "type": "device_if",
              "identifiers": [
                {
                  "vendor_id": 1423,
                  "product_id": 37904,
                  "location_id": 336794624
                }
              ]
            }
          ],
          "from": {
            "key_code": "left_command",
            "modifiers": {
              "optional": [
                "any"
              ]
            }
          },
          "to": [
            {
              "key_code": "left_option"
            }
          ],
          "type": "basic"
        },
        {
          "conditions": [
            {
              "type": "device_if",
              "identifiers": [
                {
                  "vendor_id": 1423,
                  "product_id": 37904,
                  "location_id": 336794624
                }
              ]
            }
          ],
          "from": {
            "key_code": "right_option",
            "modifiers": {
              "optional": [
                "any"
              ]
            }
          },
          "to": [
            {
              "key_code": "right_command",
              "lazy": true
            }
          ],
          "to_if_alone": [
            {
              "key_code": "japanese_kana"
            }
          ],
          "type": "basic"
        }
      ]
    }
  ]
}