i dont know if anyone has tried them. i just placed an order,  
they have 3 groups of flatwounds. you purchase a separate b string .130 for 10$
i used www.bassguitarstrings.us for my order-  
group 1 -55 75 90 110  
group 2- 50 70 85 105 - ones i bought
group 3- 45 65 80 100  
as at $23per set  
 
TI:s are .43,56,70,106
these are much heavier and might make up for what i think is a light sounding g string of the TI's
i will get back after i get them and throw them on direwolf
shipping is only $6 regardless of order
at $40 out the door these are much cheaper than TI
so am crossing fingers they dont sound cheaper than TIS -hohoho

One thing I'm going to start doing is to keep a log, writing down the date I change strings on each bass.  That will make it easier for me to get a good idea of how long a set of strings lasts.

I bought two sets for my fretless 5. Both the Bstrings came in dead. I e-mailed Ernie Ball and they told me that I was wrong. I will stick with LaBella's and TI's.
 
Just my .02
 
Dale

Slapbass i've had the same experience with dead (new) ernie ball strings too in the past and have since quit using them,plus the G strings dont last long they break too soon!....

well i guess i am in for a rude awakening...
will let you know.....

I am glad I'm not the only one.
 
Dale