I agree with you in the aspect that an acoustic is much more versatile.
I have played guitar for more than 25 years, but I ´m dealing more with blues and folk style lately in the last years.As a self taught guitar player , I´ve learned slide watching and hearing a lot(by the way I got a home page at www.guitarjoe.cjb.net ), and a friend of mine has got a simple wooden dobro(Breckler) ,but I didn´t like the sound (maybe too low, I guess).I´ve played fingerstyle and slide in another guitar (Takamine) and it sounded great most of the time. Now I play in a Taylor guitar ,that I love,and have been looking for a second guitar. Thatt´s why I have doubts about which instrument would suit me better.

Joe