I like how easy it was for me, my friends or colleagues who are not very tech savvy could use this without any problem at all! The customer service has been fantastic too! Very quick responses from team members when ever i have had questions about software features etc which makes you feel more comfortable using their product and gives them good feedback in return as well! Nothing really so far but would recommend trying out gCal 2 excel first before deciding if its right fit/suitable solution for your business needs (even though we did try it ourselves).
It's definitely worth looking into!! We're able solve alot of issues with our internal IT department regarding tracking staff availability during specific time periods via google calendar /amp; outlook calender - saving us lots og man hours having to manually input data each day & also being able sync calendars between employees working remotely.