I bought TidyCal and think it works well! I would love for it to be my calendar system for everything in my life. As I am involved in multiple businesses with multiple calendars, it'd be awesome if we could have:

1) A Booking page per connected calendar:

Company 1 Booking Page: /tidycal.com/rick/company1 with primary calendar rick@company1.com
Company 2 Booking Page: /tidycal.com/rick/company2 with primary calendar rick@company2.com
Company 3 etc...

2) Ability to find an open time slot across all calendars, BUT book the meeting on that particular Booking Page's primary calendar.