Better way to conditionally call multiple webservices from MDT CustomSettings.ini?

I've got an MDT deployment which does things a little differently based on the network location. From one of the locations, I have two webservices I need to call. My initial failed attempt was:

[Settings]
Priority=DefaultGateway

[DefaultGateway]
10.0.0.1=LOCATION_A
10.100.0.1=LOCATION_B

[LOCATION_A]
Subsection=WebService1
Subsection=WebService2

[WebService1]
WebService=http://contoso.com/webservice1

[WebService2]
WebService=http://contoso.com/webservice2

I quickly discovered this doesn't work, because you can only have one subsection in a section. So the best I could come up with was to have one webservice call another. This works, but now as the webservices evolve and have other callers, I have to maintain multiple copies of some services (that is, both chained and unchained). For example,

[Settings]
Priority=DefaultGateway

[DefaultGateway]
10.0.0.1=LOCATION_A
10.100.0.1=LOCATION_B

[LOCATION_A]
Subsection=WebService1AndWebService2

[WebService1]
WebService=http://contoso.com/webservice1

[WebService2]
WebService=http://contoso.com/webservice2

[WebService1AndWebService2]
WebService=http://contoso.com/webservice1
Subsection=WebService2

So I've got two places now where I have to maintain WebService1's url, parameters, etc.

Is there a better way within CustomSettings.ini? Should I just resort to calling the webservices manually from the task sequence instead of trying to pull this off from CustomSettings.ini?