It's always advantageous to be able to offer all nail treatments including enhancements.
I don't offer enhancements (may do in the future who knows) but I offer Shellac, Brisa Lite Smoothing Gel, Eco Soak Off Gel, Minx, Vinylux and standard polish manicures and pedicures. I started working as a mobile at the end of 2011, created my home salon in August 2012 and just this month gave up mobile. It takes time to build up a client base and as I've gone along I've added more treatments.
I am due to take the Brisa Lite Smoothing Gel training next month, then I'm going to book on to the Build It Class. From what I understand the Build It is for natural nail geeks like myself so that if as the OP mentioned above someone comes to us with 9 fabulous nails and 1 broken or short nail we can remedy that problem by fixing the broken and short nail with Brisa Lite Sculpting Gel then Shellac over the top.
I've looked several times at offering enhancements, but for me at the moment my home salon doesn't lend well for offering them- ventilation being my biggest concern. But never say never
Something Marian Newman (aka mum) once wrote has stuck with me through my 2 years of being in this industry, she basically said something along the lines of if you are going to be a natural nail geek then offer all types of natural nail treatments- I don't mean that she meant offer 101 different gel polishes
she meant offer a gel polish/shellac, natural nail manis and pedis, minx etc etc. With the introduction of Brisa Lite us natural nail geeks just got even luckier! And let's not forget Vinylux too!
Ha not sure if I've even answered your question there, but we all start somewhere and Shellac is a good a place to start as any.