Nope. Just select "-trucha" and then install.
If you have IOS61 and update HBC, HBC will then use it. IOS61 suppposedly has slightly better WiFi than other IOS, so this means that HBC, and any other homebrew launched from HBC which doesn't reload IOS, will connect to network slightly faster. But only if you update HBC with IOS61 installed.
Other than that, IOS61 is only useful for Wii Shop Channel, and there's nothing at all interesting or noteworthy about it.